主题介绍
详细介绍了Ansys流体、结构仿真及系统仿真产品在航空发动机和燃气轮机行业的最新应用。
如有任何问题请点击以下链接进入答疑室与我们的技术专家进行交流互动
https://v.ansys.com.cn/live/61da320e
演讲人简介
Ansys Simulation World
该演讲为Ansys Simulation World 虚拟大会视频
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欢迎再次莅临Ansys Simulation World
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我叫Sunil Patil
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是涡轮机械和推进部的
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行业领导者
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我将为您讲解我们的
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燃气轮机解决方案
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燃气轮机的设计与研发
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面临着重大的挑战
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如既要符合排放和噪声
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方面的环境法规
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同时还必须提高性能
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保持或提高发动机的耐用性与寿命
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以及安全性
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同时还面临着降低成本
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缩短上市时间的压力
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始终存在
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这些挑战中的
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前四个通常是在
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设计阶段进行解决
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但我们还需要使用
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预测性维护来代替
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传统的预防性维护
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确保发动机在运行阶段
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表现良好
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尽最大可能地减少停机时间
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多年来
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仿真已对燃气轮机的设计与研发
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产生了重大影响
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企业通过使用仿真
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将燃料消耗降低多达15%
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来提高性能
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仿真已将
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设计周期时间
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缩短多达33%
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仿真也已经用于
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减少物理测试
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将成本锐减了30%
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本讲座将通过大量的真实案例
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讲解仿真如何影响
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燃气轮机的设计与研发
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Ansys可提供一系列丰富功能
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实现之前的视频和幻灯片
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中介绍的各项优势
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部分与燃气轮机有关的功能
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包括数字化
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工业物联网 材料
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增材制造 空气动力学性能
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气动热
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声学 燃烧
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结构耐用性与可靠性流程压缩
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鲁棒性设计与优化
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外物损坏与结冰
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Ansys数字化与物联网功能
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使用基于仿真的数字孪生
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减少意外停机
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应对工程挑战
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详见右下方
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正在播放的视频
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您将看到
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基于仿真的
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涡轮机械系统数字孪生
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该系统的关键组件
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如电机压缩机
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驱动控制系统
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都通过降阶模型(ROM)
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来进行表达
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并且这些降阶模型
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都以智能方式进行连接
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以表达系统性能
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系统进一步与物联网平台相连
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在本例中是SAP
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提供关于机器健康
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状况的实时
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工程洞察力
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对燃气轮机而言
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这意味着预测发动机
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在使用期内的维护改进
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整体系统性能的效率提升
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以及可靠性
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Ansys可为增材制造
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提供综合全面的仿真平台
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Ansys Mechanical或Discovery中的
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拓扑优化有助于实现部件的轻量化
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Ansys的工作流程能生成基于
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几何结构和物理的支持
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切实帮助缩短构建时间
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同时帮助降低
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支持成本
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此外 Ansys还能仿真打印过程
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并同时将残余应力考虑在内
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这样能够切实地帮助
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其成功地一次性
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构建部件
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在燃气轮机的设计研发中
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结构分析与空气分析
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是关键也是基础
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我将在接下来的
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几张幻灯片里
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对此进行详细讲解
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Ansys Mechanical能让您
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您借助多维度几何结构
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缩短仿真时间
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例如 您可以用
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半自动方式提取
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整个发动机的轴对称模型
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以便在设计早期阶段的计算中
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开展大量分析
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如工作周期分析
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然后您可以
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过渡到3D
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但对单行或多阶段
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使用循环对称
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最后根据需要
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过渡到全3D模型
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此外 Ansys Workbench也可为
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耦合热机械分析提供
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优化的工作流程
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正如您在这里右上方的图中看到的
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它也包含用于代表
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涡轮机内流体流动
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的一维网络
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这对于完整发动机建模
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等工作具有重要意义
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而且我正在讲解的这些
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工作流程也可以用于
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稳态和
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瞬态分析
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Ansys Mechanical可提供
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用于了解涡轮机
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结构行为的
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高级求解器功能
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例如用于捕获部件间具有良好相互作用
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的高准确度的接触分析
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用于捕获热机械疲劳效应
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的复杂非线性材料
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用于热态到冷态几何结构分析
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的反向分析
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含裂纹扩展振动在内
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的转子动力学断裂分析
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用于调校系统乃至未调校系统
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能考虑制造缺陷的
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强制响应分析
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飞机发动机的部分
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临界事件或灾难性事件
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可能是外物
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损坏或撞击和
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风扇叶片脱落所致
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这些临界事件可以使用
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Ansys显式动力学
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解决方案进行建模
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它能用多种不同的方法
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实现多个物理场耦合
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如 Lagrangian
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ALE SPH等 这些方法高度
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可扩展 可提供快速的周转时间
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现在转回到空气动力学
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Ansys可提供如湍流建模
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可扩展高性能计算
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高速并行网格划分等的核心技术
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以及用于压缩机和涡轮机等
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空气动力学的Ansys CFX工具
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用于燃烧和排放计算的
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Ansys Fluent
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这些核心技术与工具
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可帮助您解决多种问题
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如考虑相互作用的单独叶片设计
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以及边缘与叶栅间的相互作用
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或者相邻组件间的相互作用
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或开展复杂的
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多物理场仿真
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例如
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空气力学和热条纹迁移
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空气动力学领域的
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核心技术之一是气动热
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Ansys空气动力学分析是一种叶栅方法
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Ansys CFX可为稳态分析
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和瞬态分析
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提供一系列的
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叶栅方法
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稳态方法可用于
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单个叶片空气动力学设计
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也能与混合平面结合使用
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以获得一个阶段或
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完整模块的性能
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如压缩机或涡轮机的性能
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对于偏离设计的条件和某些现象
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稳态方法可能不足以处理
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例如颤振在本质上
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具有不稳定性
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对此Ansys提供瞬态或谐波方法
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以适当的大变革方法
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体现相邻边缘与叶栅之间的
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非稳定相互作用
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这些方法只需要一个扇面
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就能开展
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非稳定性谐波分析
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这样既能显著加快求解速度
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又能保持与传统全360度
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或全轮方法
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相同的保真度
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这些方法可以用在
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多种类型的应用上
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如多级CFD分析 颤振计算
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入口变形分析 热条纹迁移分析
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00:09:35.32 - 00:09:39.02 16
空气动力学从疲劳和耐用性角度来说
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是一个重要的领域
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00:09:41.49 - 00:09:45.19 12
Ansys可为两个重要的
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空气力学问题提供优化的工作流程
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我首先要介绍的是
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叶片颤振工作流程
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您可以先在Ansys Mechanical
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中开展模态分析
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导入感兴趣的模态形状
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采用一系列的
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节点直径
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在Ansys CFX中完成
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00:10:07.00 - 00:10:07.84 9
空气动力学阻尼计算
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00:10:07.84 - 00:10:11.73 12
此外 Ansys还推出了
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快速傅里叶转换方法
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00:10:13.46 - 00:10:16.78 8
这种方法可在时域
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或频域中进行使用
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00:10:17.38 - 00:10:20.70 10
需要在一系列节点直径
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上针对不同频率
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极为迅速地完成大量计算
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了解给定系统
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是否存在颤振
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并为单独组件
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绘制正确的颤振图
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这一点至关重要
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空气动力学
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的另一个重要方面
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是力响应
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分析
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对此Ansys Mechanical提供
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00:10:49.91 - 00:10:51.93 6
两项核心技术
-
00:10:52.00 - 00:10:55.12 9
循环对称和模态叠加
-
00:10:55.12 - 00:10:56.93 7
可以切实地加快
-
00:10:57.00 - 00:10:58.39 8
力响应的分析速度
-
00:11:03.16 - 00:11:06.55 16
现在该工作流程先从CFD方面入手
-
00:11:06.55 - 00:11:06.92 10
我之前提到的这些瞬态
-
00:11:07.00 - 00:11:10.39 6
叶栅方法之一
-
00:11:10.39 - 00:11:11.22 6
可以用于捕获
-
00:11:11.30 - 00:11:14.69 7
叶片栅和发动机
-
00:11:14.69 - 00:11:15.97 9
间的非稳定相互作用
-
00:11:15.97 - 00:11:19.63 6
或者也可以在
-
00:11:19.63 - 00:11:20.36 17
Ansys Mechanical中
-
00:11:20.44 - 00:11:24.10 12
用于开展循环对称模态叠加
-
00:11:24.10 - 00:11:26.05 6
谐波响应分析
-
00:11:26.05 - 00:11:30.48 7
为了计算叶片的
-
00:11:30.48 - 00:11:31.27 6
给定强制响应
-
00:11:31.27 - 00:11:34.99 17
我们还在Workbench中引入了
-
00:11:34.99 - 00:11:35.48 10
一种用于力响应分析的
-
00:11:35.57 - 00:11:39.29 5
ACT应用
-
00:11:39.29 - 00:11:41.02 9
从设置一直到详细的
-
00:11:41.11 - 00:11:44.83 5
结果后处理
-
00:11:44.83 - 00:11:45.65 14
其能真正地自动化这一分析过程
-
00:11:45.65 - 00:11:49.35 8
这对于疲劳和寿命
-
00:11:49.35 - 00:11:49.77 9
计算有着重要的意义
-
00:11:53.89 - 00:11:57.75 11
对于冷却涡轮热传递分析
-
00:11:57.75 - 00:11:59.55 14
Ansys CFX可提供两种
-
00:11:59.64 - 00:12:01.36 5
不同的方法
-
00:12:01.36 - 00:12:05.00 8
薄膜冷却法可以在
-
00:12:05.00 - 00:12:05.64 11
早期设计迭代中进行使用
-
00:12:05.73 - 00:12:09.29 8
以优化薄膜冷却孔
-
00:12:09.29 - 00:12:13.21 9
尽管可以使用高保真
-
00:12:13.21 - 00:12:14.77 7
共轭热传递方法
-
00:12:14.86 - 00:12:18.78 18
通过面板对固体数值进行快速的网格划分
-
00:12:18.78 - 00:12:19.56 9
以获取更深入的信息
-
00:12:19.65 - 00:12:23.14 5
并开展验证
-
00:12:26.66 - 00:12:30.38 13
此外 Ansys还可为湍流
-
00:12:30.38 - 00:12:31.54 5
和燃烧建模
-
00:12:31.62 - 00:12:33.69 9
提供同类最佳的工具
-
00:12:33.69 - 00:12:37.16 12
Ansys可为任何燃料的
-
00:12:37.16 - 00:12:37.70 10
建模提供所有必要工具
-
00:12:37.78 - 00:12:41.25 16
Ansys模型燃料库包含60多种
-
00:12:41.25 - 00:12:42.17 12
经过验证的燃料模型和工具
-
00:12:42.25 - 00:12:45.72 12
如Chemkin-Pro
-
00:12:45.72 - 00:12:46.03 4
可以用于
-
00:12:46.03 - 00:12:49.92 11
机理简化 火焰速度计算
-
00:12:49.92 - 00:12:52.00 7
以及燃料特征化
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00:12:52.00 - 00:12:56.88 27
Ansys Fluent可提供先进的VOF-DPM模型
-
00:12:56.88 - 00:13:00.33 13
用于准确地在Fluent中
-
00:13:00.33 - 00:13:02.47 5
特征化喷射
-
00:13:02.55 - 00:13:06.00 10
您也可以仿真火焰传播
-
00:13:06.00 - 00:13:07.07 5
等复杂现象
-
00:13:07.15 - 00:13:10.60 12
如这个多燃烧器案例中所示
-
00:13:10.60 - 00:13:12.52 11
也能开展燃烧动力学计算
-
00:13:12.52 - 00:13:15.95 10
获得准确的压力特征和
-
00:13:15.95 - 00:13:16.95 2
频谱
-
00:13:20.81 - 00:13:24.88 17
Ansys Fluent还可为排放
-
00:13:24.88 - 00:13:26.33 7
提供先进的模型
-
00:13:26.33 - 00:13:29.95 9
例如 可以使用针对
-
00:13:29.95 - 00:13:31.00 7
杨氏火焰方法的
-
00:13:31.08 - 00:13:34.70 13
动差模型提供良好的烟灰预测
-
00:13:34.70 - 00:13:35.83 11
也可以使用FGM和火焰
-
00:13:35.91 - 00:13:39.53 7
生成的燃烧模型
-
00:13:39.53 - 00:13:40.17 4
准确预测
-
00:13:40.17 - 00:13:45.05 6
不同情况下的
-
00:13:45.05 - 00:13:45.60 12
一氧化碳和氮氧化物的趋势
-
00:13:45.60 - 00:13:51.76 8
结冰是飞机发动机
-
00:13:51.76 - 00:13:52.86 7
的又一关键领域
-
00:13:52.86 - 00:13:57.14 11
Ansys不仅可为积冰
-
00:13:57.14 - 00:13:58.18 8
提供建模解决方案
-
00:13:58.28 - 00:14:02.18 7
还能建模积冰对
-
00:14:02.27 - 00:14:06.56 12
空气动力学性能劣化的影响
-
00:14:06.56 - 00:14:10.08 17
Ansys提供的这种自动化工作流程
-
00:14:10.08 - 00:14:15.11 12
可以无需任何用户手动干预
-
00:14:15.11 - 00:14:16.79 6
就能对复杂的
-
00:14:16.91 - 00:14:17.47 9
冰形状进行网格化分
-
00:14:17.47 - 00:14:22.29 8
我们还为燃气轮机
-
00:14:22.29 - 00:14:23.80 9
提供快速的脱冰建模
-
00:14:23.80 - 00:14:27.77 7
能预测散发频率
-
00:14:27.77 - 00:14:29.28 6
总脱落质量和
-
00:14:29.37 - 00:14:32.20 9
脱落冰块的最大尺寸
-
00:14:32.20 - 00:14:35.40 10
我们还提供一体化应力
-
00:14:35.40 - 00:14:37.04 11
分析和积聚分析工作流程
-
00:14:37.11 - 00:14:40.32 10
能有效地仿真复杂现象
-
00:14:40.32 - 00:14:42.45 9
如这里的动画里所示
-
00:14:42.52 - 00:14:45.73 8
冰层里的裂纹滋生
-
00:14:45.73 - 00:14:46.16 10
结果给人留下深刻印象
-
00:14:46.16 - 00:14:50.42 7
防冰和除冰系统
-
00:14:50.42 - 00:14:52.02 6
对飞机发动机
-
00:14:52.12 - 00:14:56.38 4
至关重要
-
00:14:56.38 - 00:14:58.17 7
Ansys提供
-
00:14:58.27 - 00:15:02.53 9
的工作流程可以评估
-
00:15:02.53 - 00:15:04.32 6
热空气防冰和
-
00:15:04.32 - 00:15:08.40 6
电热除冰系统
-
00:15:08.40 - 00:15:09.22 10
如果水流过受保护区域
-
00:15:09.31 - 00:15:13.39 7
可以仿真冰形成
-
00:15:13.39 - 00:15:15.02 8
而且更为重要的是
-
00:15:15.11 - 00:15:19.19 11
可以像这个动画里所示的
-
00:15:19.19 - 00:15:19.37 6
可视化冰形成
-
00:15:19.37 - 00:15:24.37 17
或冰融化情况 如下面的动画里所示的
-
00:15:28.45 - 00:15:32.32 11
我要讲解的最后一项功能
-
00:15:32.32 - 00:15:33.27 5
是流程压缩
-
00:15:33.35 - 00:15:37.23 8
鲁棒性设计与优化
-
00:15:37.23 - 00:15:40.41 9
其用于满足加快市场
-
00:15:40.50 - 00:15:44.37 9
投放速度和优化产品
-
00:15:44.37 - 00:15:45.58 7
性能的重要需求
-
00:15:45.58 - 00:15:49.60 9
我们在工具层面以及
-
00:15:49.69 - 00:15:53.81 15
工作流程层面都提供脚本编写功能
-
00:15:53.81 - 00:15:54.55 10
以完全自动化设计流程
-
00:15:54.55 - 00:15:58.68 18
Ansys optiSLang可提供
-
00:15:58.68 - 00:16:00.42 10
先进的优化和鲁棒性的
-
00:16:00.51 - 00:16:01.62 4
设计功能
-
00:16:01.62 - 00:16:06.06 13
Ansys在各个层面都提供
-
00:16:06.06 - 00:16:07.65 8
降阶模型生成功能
-
00:16:07.74 - 00:16:12.19 11
从简单的响应面ROM到
-
00:16:12.19 - 00:16:12.98 9
详细的3D ROM
-
00:16:13.08 - 00:16:17.53 10
甚至用于分析瞬态现象
-
00:16:17.53 - 00:16:19.50 6
的动态ROM
-
00:16:22.70 - 00:16:26.75 9
作为本场讲座的结语
-
00:16:26.86 - 00:16:30.07 6
我想重复声明
-
00:16:30.07 - 00:16:35.32 12
Ansys为燃气轮机提供
-
00:16:35.32 - 00:16:35.56 9
经过验证的解决方案
-
00:16:35.56 - 00:16:38.80 12
例如一家机构使用基于仿真
-
00:16:38.80 - 00:16:39.96 6
的数字孪生和
-
00:16:40.03 - 00:16:43.28 11
实地元模型为他们的机队
-
00:16:43.28 - 00:16:44.29 7
开展预测性维护
-
00:16:44.29 - 00:16:48.15 17
一家燃气轮机OEM厂商充分利用仿真
-
00:16:48.15 - 00:16:50.30 7
完善其产品研发
-
00:16:50.39 - 00:16:54.25 6
提高产品质量
-
00:16:54.25 - 00:16:54.43 6
节省测试时间
-
00:16:54.43 - 00:16:58.34 10
许多公司都在使用仿真
-
00:16:58.34 - 00:17:01.38 8
通过提高入口温度
-
00:17:01.38 - 00:17:02.88 7
提升涡轮机性能
-
00:17:02.88 - 00:17:06.72 19
您可以通过阅读进一步了解这些案例的详情
-
00:17:06.72 - 00:17:07.32 9
有关这些案例的链接
-
00:17:07.41 - 00:17:11.26 8
提供在燃气轮机的
-
00:17:11.26 - 00:17:12.46 5
配套资料中
-
00:17:12.54 - 00:17:14.77 12
这些资料是本展厅的一部分
-
00:17:14.77 - 00:17:18.27 8
如果您对我讲解的
-
00:17:18.27 - 00:17:18.50 8
内容存有任何疑问
-
00:17:18.58 - 00:17:22.09 14
或对燃气轮机存有任何相关疑问
-
00:17:22.09 - 00:17:23.02 9
请通过本讲座课后的
-
00:17:23.10 - 00:17:26.60 9
聊天窗口或答疑窗口
-
00:17:26.60 - 00:17:27.62 4
告知我们
-
00:17:27.62 - 00:17:31.92 13
您也可以使用展厅的聊天功能
-
00:17:31.92 - 00:17:35.58 7
我或者全球各地
-
00:17:35.58 - 00:17:35.74 4
任何担任
-
00:17:35.82 - 00:17:39.49 8
燃气轮机主题专家
-
00:17:39.49 - 00:17:40.62 5
的我的同事
-
00:17:40.71 - 00:17:42.42 8
都将回答您的问题
-
00:17:42.42 - 00:17:46.83 8
最后祝您在本展厅
-
00:17:46.83 - 00:17:47.13 28
以及 Simulation World 世界度过美好时光
-
00:17:47.23 - 00:17:51.65 7
我们愿在此与您
-
00:17:51.65 - 00:17:52.04 2
交流
-
00:00:00.00 - 00:00:03.61 43
Welcome again to Ansys Simulation World my
-
00:00:03.61 - 00:00:04.57 13
name is Sunil
-
00:00:04.65 - 00:00:08.26 36
Patil and I'm an industry leader for
-
00:00:08.26 - 00:00:09.95 29
turbomachinery and propulsion
-
00:00:10.03 - 00:00:13.64 45
and I'm going to present our solution for gas
-
00:00:13.64 - 00:00:14.37 8
turbines
-
00:00:14.37 - 00:00:17.84 40
The exist significant challenges for gas
-
00:00:17.84 - 00:00:20.16 35
turbine design and development such
-
00:00:20.24 - 00:00:23.72 37
as environmental regulations covering
-
00:00:23.72 - 00:00:25.73 29
emissions and noise a race to
-
00:00:25.81 - 00:00:28.98 41
increase the performance at the same time
-
00:00:28.98 - 00:00:32.96 45
maintaining or increasing durability life and
-
00:00:32.96 - 00:00:34.82 20
safety of the engine
-
00:00:34.82 - 00:00:38.20 42
and there is always pressure to reduce the
-
00:00:38.20 - 00:00:38.65 8
cost and
-
00:00:38.72 - 00:00:39.78 14
time to market
-
00:00:39.78 - 00:00:43.17 38
The first four of these challenges are
-
00:00:43.17 - 00:00:44.68 26
typically addressed during
-
00:00:44.76 - 00:00:45.97 16
the design phase
-
00:00:45.97 - 00:00:49.29 41
But we also want to make sure the engines
-
00:00:49.29 - 00:00:49.80 9
performed
-
00:00:49.87 - 00:00:53.19 40
well during the operation phase with the
-
00:00:53.19 - 00:00:54.74 25
minimal downtime possibly
-
00:00:54.82 - 00:00:58.14 39
with predictive maintenance rather than
-
00:00:58.14 - 00:01:00.28 34
traditional preventive maintenance
-
00:01:02.70 - 00:01:06.76 38
Over the years simulations have made a
-
00:01:06.76 - 00:01:08.12 21
significant impact on
-
00:01:08.21 - 00:01:11.29 34
gas turbine design and development
-
00:01:11.29 - 00:01:14.84 42
Companies have used simulation to increase
-
00:01:14.84 - 00:01:16.81 27
the performance by reducing
-
00:01:16.89 - 00:01:18.39 19
fuel burn up to 15%
-
00:01:18.39 - 00:01:22.50 40
Simulations have been used to reduce the
-
00:01:22.50 - 00:01:23.69 17
design cycle time
-
00:01:23.78 - 00:01:24.61 9
up to 33%
-
00:01:24.61 - 00:01:28.16 44
And simulations have been used also for cost
-
00:01:28.16 - 00:01:28.88 9
reduction
-
00:01:28.88 - 00:01:33.24 35
by 30% by reducing physical testing
-
00:01:35.39 - 00:01:39.23 39
There are many real life stories on how
-
00:01:39.23 - 00:01:40.17 16
simulations have
-
00:01:40.25 - 00:01:43.93 43
impacted gas turbine design and development
-
00:01:43.93 - 00:01:47.48 41
Ansys provides a range of capabilities to
-
00:01:47.48 - 00:01:49.61 30
realize the benefits mentioned
-
00:01:49.69 - 00:01:51.90 28
in previous video and slides
-
00:01:51.90 - 00:01:55.65 41
Some of these capabilities related to gas
-
00:01:55.65 - 00:01:57.66 27
turbines are digitalization
-
00:01:57.74 - 00:02:01.49 39
industrial Internet of Things materials
-
00:02:01.49 - 00:02:05.25 46
additive manufacturing aerodynamic performance
-
00:02:05.25 - 00:02:05.33 11
aerothermal
-
00:02:05.42 - 00:02:07.76 20
acoustics combustion
-
00:02:07.76 - 00:02:11.01 45
structural durability and reliability process
-
00:02:11.01 - 00:02:14.11 42
compression robust design and optimization
-
00:02:14.19 - 00:02:16.43 31
foreign object damage and icing
-
00:02:21.03 - 00:02:24.80 41
Ansys capabilities for digitalization and
-
00:02:24.80 - 00:02:26.89 27
IoT address the engineering
-
00:02:26.97 - 00:02:30.75 42
challenge to reduce the unplanned downtime
-
00:02:30.75 - 00:02:33.18 24
through simulation based
-
00:02:33.26 - 00:02:33.85 12
digital twin
-
00:02:33.85 - 00:02:37.30 45
In the video being played at the right bottom
-
00:02:37.30 - 00:02:37.60 3
you
-
00:02:37.68 - 00:02:41.13 45
will see the simulation based digital twin of
-
00:02:41.13 - 00:02:42.44 16
a turbomachinery
-
00:02:42.51 - 00:02:45.97 43
system where the critical components of the
-
00:02:45.97 - 00:02:47.12 14
system such as
-
00:02:47.12 - 00:02:50.83 43
electric motor compressor drive and control
-
00:02:50.83 - 00:02:53.30 31
systems are represented through
-
00:02:53.38 - 00:02:55.12 21
a reduced order model
-
00:02:55.12 - 00:02:59.59 45
and these ROMs are connected intelligently to
-
00:02:59.59 - 00:03:01.68 20
represent the system
-
00:03:01.78 - 00:03:02.88 11
performance
-
00:03:02.88 - 00:03:07.22 42
Further it is connected to an IoT platform
-
00:03:07.22 - 00:03:07.99 12
which is SAP
-
00:03:08.09 - 00:03:12.43 45
in this case to provide real time engineering
-
00:03:12.43 - 00:03:13.59 11
insights on
-
00:03:13.69 - 00:03:17.07 35
health and condition of the machine
-
00:03:17.07 - 00:03:20.69 44
For gas turbine this means prediction of the
-
00:03:20.69 - 00:03:22.14 18
engine maintenance
-
00:03:22.22 - 00:03:25.84 45
improvement of engine lifetime and efficiency
-
00:03:25.84 - 00:03:28.17 29
improvement of overall system
-
00:03:28.25 - 00:03:30.43 27
performance and reliability
-
00:03:30.43 - 00:03:35.22 39
Ansys provides comprehensive simulation
-
00:03:35.22 - 00:03:38.63 35
platform for additive manufacturing
-
00:03:38.63 - 00:03:43.11 44
Topology optimization in Ansys Aechanical or
-
00:03:43.11 - 00:03:46.71 36
Discovery helps lightweighting parts
-
00:03:46.71 - 00:03:51.24 41
We have workflow to generate geometry and
-
00:03:51.24 - 00:03:53.16 22
physics based supports
-
00:03:53.26 - 00:03:57.80 43
which really helps to reduce the build time
-
00:03:57.80 - 00:03:58.51 8
and also
-
00:03:58.61 - 00:04:00.93 23
reduce the support cost
-
00:04:00.93 - 00:04:04.63 40
Also we can do print process simulations
-
00:04:04.63 - 00:04:05.95 20
while accounting for
-
00:04:06.03 - 00:04:09.73 47
residual stresses which really helps in getting
-
00:04:09.73 - 00:04:10.97 15
the build right
-
00:04:11.05 - 00:04:12.78 21
the first time itself
-
00:04:16.98 - 00:04:20.64 44
Structural and aero analysis are so critical
-
00:04:20.64 - 00:04:22.03 18
and fundamental in
-
00:04:22.11 - 00:04:25.77 41
gas turbine design and development so I'm
-
00:04:25.77 - 00:04:26.59 13
going to talk
-
00:04:26.67 - 00:04:28.71 25
about this in more detail
-
00:04:28.71 - 00:04:33.26 43
in next few slides Ansys Mechanical enables
-
00:04:33.26 - 00:04:34.27 11
you to work
-
00:04:34.37 - 00:04:38.93 42
with multidimensional geometries to reduce
-
00:04:38.93 - 00:04:40.65 19
the simulation time
-
00:04:40.65 - 00:04:45.30 37
For example you can extract in a semi
-
00:04:45.30 - 00:04:46.24 16
automated manner
-
00:04:46.24 - 00:04:49.95 42
an axisymmetric model for the whole engine
-
00:04:49.95 - 00:04:54.16 43
to perform lots of analysis in early design
-
00:04:54.16 - 00:04:55.85 19
stages calculations
-
00:04:55.94 - 00:05:00.16 44
such as the duty cycle analysis then you can
-
00:05:00.16 - 00:05:01.10 10
transition
-
00:05:01.19 - 00:05:05.41 43
to 3D but with cyclic symmetry for a single
-
00:05:05.41 - 00:05:05.60 3
row
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00:05:05.60 - 00:05:08.50 18
or multiple stages
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00:05:08.50 - 00:05:13.57 39
and then transition to full 3D model as
-
00:05:13.57 - 00:05:13.69 6
needed
-
00:05:16.50 - 00:05:20.97 41
Ansys Workbench also provides streamlined
-
00:05:20.97 - 00:05:25.24 46
workflows for couple thermomechanical analysis
-
00:05:25.34 - 00:05:29.21 39
as you can see in this image on the top
-
00:05:29.31 - 00:05:29.81 5
right
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00:05:29.81 - 00:05:33.20 43
It can also include 1D network to represent
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00:05:33.20 - 00:05:33.95 11
fluid flows
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00:05:34.02 - 00:05:37.41 40
within turbine and that is important for
-
00:05:37.41 - 00:05:38.62 20
doing something like
-
00:05:38.69 - 00:05:40.28 21
whole engine modeling
-
00:05:40.28 - 00:05:43.28 31
And these workflows I'm talking
-
00:05:43.28 - 00:05:47.08 37
can be used for the steady as well as
-
00:05:47.08 - 00:05:47.16 9
transient
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00:05:47.25 - 00:05:47.93 8
analysis
-
00:05:50.97 - 00:05:56.27 41
Ansys Mechanical provides advanced solver
-
00:05:56.27 - 00:05:57.33 12
capabilities
-
00:05:57.33 - 00:06:00.70 37
required to understand the structural
-
00:06:00.70 - 00:06:02.27 28
behavior of turbines such as
-
00:06:02.35 - 00:06:05.72 43
highly accurate contact analysis to capture
-
00:06:05.72 - 00:06:07.74 28
fine interaction between the
-
00:06:07.82 - 00:06:11.19 43
parts complex nonlinear material to capture
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00:06:11.19 - 00:06:13.59 33
thermo mechanical fatigue effects
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00:06:13.59 - 00:06:16.96 41
inverse analysis for hot to cold geometry
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00:06:16.96 - 00:06:19.06 31
analysis rotordynamics fracture
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00:06:19.13 - 00:06:22.51 36
analysis including crack propagation
-
00:06:22.51 - 00:06:24.98 41
vibration for force response analysis for
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00:06:25.05 - 00:06:28.43 44
a tuned or even a mistuned system to account
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00:06:28.43 - 00:06:29.63 17
for manufacturing
-
00:06:29.63 - 00:06:30.60 13
imperfections
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00:06:36.74 - 00:06:40.26 43
Some of the critical or catastrophic events
-
00:06:40.26 - 00:06:41.74 20
for aircraft engines
-
00:06:41.82 - 00:06:45.34 43
can be foreign object damage or both strike
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00:06:45.34 - 00:06:45.81 7
and fan
-
00:06:45.89 - 00:06:46.68 9
blade out
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00:06:46.68 - 00:06:50.28 43
These critical events can be modelled using
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00:06:50.28 - 00:06:52.12 22
Ansys explicit dynamic
-
00:06:52.20 - 00:06:52.93 9
solutions
-
00:06:52.93 - 00:06:56.83 36
It can couple multiple physics using
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00:06:56.83 - 00:06:59.00 36
different approaches like Lagrangian
-
00:06:59.09 - 00:07:03.00 36
ALE SPH and these methods are highly
-
00:07:03.00 - 00:07:04.22 19
scalable to provide
-
00:07:04.30 - 00:07:05.87 18
a fast turn around
-
00:07:09.46 - 00:07:13.06 38
Now switch to aero Ansys provides core
-
00:07:13.06 - 00:07:14.34 20
technologies such as
-
00:07:14.42 - 00:07:18.02 45
turbulence modeling scalable high performance
-
00:07:18.02 - 00:07:20.90 35
computing fast and parallel meshing
-
00:07:20.90 - 00:07:24.15 38
as well as tools such as Ansys CFX for
-
00:07:24.23 - 00:07:26.88 35
compressor and turbine aerodynamics
-
00:07:26.88 - 00:07:30.61 40
Ansys Fluent for combustion and emission
-
00:07:30.61 - 00:07:32.53 27
calculations and these core
-
00:07:32.61 - 00:07:36.35 45
technologies and tools enables you to go from
-
00:07:36.35 - 00:07:37.51 13
anywhere like
-
00:07:37.59 - 00:07:41.33 42
the individual blade design to account for
-
00:07:41.33 - 00:07:43.00 20
interaction also the
-
00:07:43.00 - 00:07:46.72 45
interactions between the edges and blade rows
-
00:07:46.72 - 00:07:48.62 22
or interaction between
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00:07:48.70 - 00:07:52.42 40
the adjacent components or to do complex
-
00:07:52.42 - 00:07:54.49 29
multiphysics simulations such
-
00:07:54.57 - 00:07:57.55 41
as aeromechanics and hot streak migration
-
00:08:00.42 - 00:08:04.66 45
One of the core technologies for aerodynamics
-
00:08:04.66 - 00:08:05.89 11
aerothermal
-
00:08:05.89 - 00:08:10.02 46
or aeromechanics analysis is blade row methods
-
00:08:10.02 - 00:08:12.22 18
Ansys CFX provides
-
00:08:12.31 - 00:08:16.44 45
wide range of blade row methods for steady as
-
00:08:16.44 - 00:08:16.81 7
well as
-
00:08:16.90 - 00:08:18.56 18
transient analysis
-
00:08:18.56 - 00:08:23.11 41
Steady methods can be used for individual
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00:08:23.11 - 00:08:24.63 17
blade aero design
-
00:08:24.63 - 00:08:29.05 44
It can also be used with mixing plane to get
-
00:08:29.16 - 00:08:33.68 39
the performance of a stage or the whole
-
00:08:33.68 - 00:08:34.29 11
module such
-
00:08:34.39 - 00:08:36.81 24
as compressor or turbine
-
00:08:36.81 - 00:08:40.42 44
Steady methods can fall short for off design
-
00:08:40.42 - 00:08:41.46 14
conditions and
-
00:08:41.54 - 00:08:45.16 42
some phenomena like flutter are inherently
-
00:08:45.16 - 00:08:46.68 21
unsteady for which we
-
00:08:46.76 - 00:08:50.38 41
provide transient or harmonic method with
-
00:08:50.38 - 00:08:52.62 31
appropriate big change approach
-
00:08:52.62 - 00:08:57.14 43
to account for unsteady interaction between
-
00:08:57.14 - 00:08:59.46 24
the edges and blade rows
-
00:08:59.46 - 00:09:05.13 39
These methods require only a sector for
-
00:09:05.13 - 00:09:06.90 18
unsteady harmonic
-
00:09:07.03 - 00:09:08.04 8
analysis
-
00:09:08.04 - 00:09:11.77 36
which increase the solution speed up
-
00:09:11.77 - 00:09:13.93 34
dramatically while maintaining the
-
00:09:14.01 - 00:09:17.75 45
same fidelity as traditional full 360 or full
-
00:09:17.75 - 00:09:18.83 12
view methods
-
00:09:18.83 - 00:09:22.23 45
These methods can be used for a wide range of
-
00:09:22.31 - 00:09:25.71 44
applications such as multistage CFD analysis
-
00:09:25.71 - 00:09:28.52 37
flutter calculations inlet distortion
-
00:09:28.59 - 00:09:31.70 41
analysis or hot streak migration analysis
-
00:09:35.32 - 00:09:39.02 39
Aeromechanics is an important area from
-
00:09:39.02 - 00:09:41.40 34
fatigue and durability perspective
-
00:09:41.49 - 00:09:45.19 43
Ansys provide streamlined workflows for two
-
00:09:45.19 - 00:09:47.91 32
important aeromechanics problems
-
00:09:47.91 - 00:09:51.70 41
1st I'm going to talk about blade flutter
-
00:09:51.70 - 00:09:52.62 14
workflow where
-
00:09:52.71 - 00:09:56.50 41
you can first perform a modal analysis in
-
00:09:56.50 - 00:09:57.59 16
Ansys Mechanical
-
00:09:57.68 - 00:10:01.47 45
bring in the mode shape of interest and carry
-
00:10:01.47 - 00:10:01.72 3
out
-
00:10:01.72 - 00:10:05.89 42
aero damping calculation in answer CFX for
-
00:10:05.89 - 00:10:06.91 16
a range of nodal
-
00:10:07.00 - 00:10:07.84 9
diameters
-
00:10:07.84 - 00:10:11.73 32
We also enabled the fast fourier
-
00:10:11.73 - 00:10:13.46 22
transformation method
-
00:10:13.46 - 00:10:16.78 45
to work either in time domain or in frequency
-
00:10:16.78 - 00:10:17.30 6
domain
-
00:10:17.38 - 00:10:20.70 38
to do do this tons of calculations for
-
00:10:20.70 - 00:10:21.81 21
different frequencies
-
00:10:21.89 - 00:10:25.22 40
for range of nodal diameters really fast
-
00:10:25.22 - 00:10:26.18 17
which is critical
-
00:10:26.18 - 00:10:29.49 38
to get to know whether there will be a
-
00:10:29.49 - 00:10:29.56 7
flutter
-
00:10:29.63 - 00:10:32.58 40
or not for a given system and to get the
-
00:10:32.65 - 00:10:35.96 41
flutter map for the individual components
-
00:10:35.96 - 00:10:36.11 5
right
-
00:10:40.94 - 00:10:44.49 29
The other important aspect of
-
00:10:44.49 - 00:10:46.07 31
aeromechanics is force response
-
00:10:46.15 - 00:10:46.79 8
analysis
-
00:10:46.79 - 00:10:49.91 39
for which Ansys mechanical provides two
-
00:10:49.91 - 00:10:51.93 27
important core technologies
-
00:10:52.00 - 00:10:55.12 51
cyclic symmetry and mode superposition which really
-
00:10:55.12 - 00:10:56.93 26
enables the force response
-
00:10:57.00 - 00:10:58.39 20
analysis really fast
-
00:11:03.16 - 00:11:06.55 40
Now this workflow starts on the CFD side
-
00:11:06.55 - 00:11:06.92 9
where one
-
00:11:07.00 - 00:11:10.39 48
of these transient blade row methods I mentioned
-
00:11:10.39 - 00:11:11.22 11
can be used
-
00:11:11.30 - 00:11:14.69 43
to capture the unsteady interaction between
-
00:11:14.69 - 00:11:15.97 18
the blade rows and
-
00:11:15.97 - 00:11:19.63 36
that EO forcing can be used in Ansys
-
00:11:19.63 - 00:11:20.36 10
Mechanical
-
00:11:20.44 - 00:11:24.10 42
to do a cyclic symmetry mode superposition
-
00:11:24.10 - 00:11:26.05 26
harmonic response analysis
-
00:11:26.05 - 00:11:30.48 40
to compute the response of the blade for
-
00:11:30.48 - 00:11:31.27 13
given forcing
-
00:11:31.27 - 00:11:34.99 46
We also introduced an ACT app in Workbench for
-
00:11:34.99 - 00:11:35.48 5
force
-
00:11:35.57 - 00:11:39.29 45
response analysis which really automates this
-
00:11:39.29 - 00:11:41.02 20
analysis from set up
-
00:11:41.11 - 00:11:44.83 41
to get all the way detail post processing
-
00:11:44.83 - 00:11:45.65 13
results which
-
00:11:45.65 - 00:11:49.35 36
are important for fatigue and lifing
-
00:11:49.35 - 00:11:49.77 12
calculations
-
00:11:53.89 - 00:11:57.75 41
For cooled turbine heat transfer analysis
-
00:11:57.75 - 00:11:59.55 22
Ansys CFX provides two
-
00:11:59.64 - 00:12:01.36 20
different approaches
-
00:12:01.36 - 00:12:05.00 40
The film cooling approach can be used in
-
00:12:05.00 - 00:12:05.64 12
early design
-
00:12:05.73 - 00:12:09.29 44
iteration to optimize the film cooling holes
-
00:12:09.29 - 00:12:13.21 38
while the high fidelity conjugate heat
-
00:12:13.21 - 00:12:14.77 24
transfer approach can be
-
00:12:14.86 - 00:12:18.78 37
used with panel meshing an fast solid
-
00:12:18.78 - 00:12:19.56 16
numerics to gain
-
00:12:19.65 - 00:12:23.14 40
further insights and perform validations
-
00:12:26.66 - 00:12:30.38 43
Ansys provides also best in class tools for
-
00:12:30.38 - 00:12:31.54 13
modeling flow
-
00:12:31.62 - 00:12:33.69 25
turbulence and combustion
-
00:12:33.69 - 00:12:37.16 43
We provide all necessary tools to model any
-
00:12:37.16 - 00:12:37.70 8
fuel our
-
00:12:37.78 - 00:12:41.25 40
model fuel library contains more than 60
-
00:12:41.25 - 00:12:42.17 14
validated fuel
-
00:12:42.25 - 00:12:45.72 45
models and tools like Chemkin-pro can be used
-
00:12:45.72 - 00:12:46.03 3
for
-
00:12:46.03 - 00:12:49.92 44
mechanism reduction flame speed calculations
-
00:12:49.92 - 00:12:52.00 25
and fuel characterization
-
00:12:52.00 - 00:12:56.88 36
Ansys Fluent has advanced VOF to DPM
-
00:12:56.88 - 00:13:00.33 41
model for accurate spray characterization
-
00:13:00.33 - 00:13:02.47 31
in Fluent you can also simulate
-
00:13:02.55 - 00:13:06.00 35
complex phenomena such as the flame
-
00:13:06.00 - 00:13:07.07 23
propagation as shown in
-
00:13:07.15 - 00:13:10.60 45
this multi burner case and perform combustion
-
00:13:10.60 - 00:13:12.52 24
dynamics calculations to
-
00:13:12.52 - 00:13:15.95 39
get accurate pressure signature and the
-
00:13:15.95 - 00:13:16.95 18
frequency spectrum
-
00:13:20.81 - 00:13:24.88 47
Ansys Fluent also provides sophisticated models
-
00:13:24.88 - 00:13:26.33 13
for emissions
-
00:13:26.33 - 00:13:29.95 45
For example you can see good soot predictions
-
00:13:29.95 - 00:13:31.00 12
using method
-
00:13:31.08 - 00:13:34.70 43
of moments model for Young's flame and also
-
00:13:34.70 - 00:13:35.83 15
good prediction
-
00:13:35.91 - 00:13:39.53 37
of trends for CO and NOx on different
-
00:13:39.53 - 00:13:40.17 11
cases using
-
00:13:40.17 - 00:13:45.05 34
FGM and flame generated combustion
-
00:13:45.05 - 00:13:45.60 5
model
-
00:13:45.60 - 00:13:51.76 43
Icing is another critical area for aircraft
-
00:13:51.76 - 00:13:52.86 7
engines
-
00:13:52.86 - 00:13:57.14 42
and we provide solutions to not only model
-
00:13:57.14 - 00:13:58.18 13
ice accretion
-
00:13:58.28 - 00:14:02.18 41
but we can also model the impact of it on
-
00:14:02.27 - 00:14:06.56 43
the aerodynamic performance degradations we
-
00:14:06.56 - 00:14:10.08 38
provide this automated workflows which
-
00:14:10.08 - 00:14:15.11 39
avoids any manual user intervention and
-
00:14:15.11 - 00:14:16.79 18
meshing of complex
-
00:14:16.91 - 00:14:17.47 10
ice shapes
-
00:14:17.47 - 00:14:22.29 42
We also provide fast ice shedding modeling
-
00:14:22.29 - 00:14:23.80 16
for gas turbines
-
00:14:23.80 - 00:14:27.77 43
which predicts the shedding frequency total
-
00:14:27.77 - 00:14:29.28 17
shed mass and the
-
00:14:29.37 - 00:14:32.20 27
max size of the shed pieces
-
00:14:32.20 - 00:14:35.40 37
We also provide the integrated stress
-
00:14:35.40 - 00:14:37.04 31
analysis and accretion analysis
-
00:14:37.11 - 00:14:40.32 40
workflows which really enables simulated
-
00:14:40.32 - 00:14:42.45 34
complex phenomena such as cracking
-
00:14:42.52 - 00:14:45.73 45
in the ice sheet shown here in this animation
-
00:14:45.73 - 00:14:46.16 5
which
-
00:14:46.16 - 00:14:50.42 43
is really impressive anti-icing and deicing
-
00:14:50.42 - 00:14:52.02 16
systems are very
-
00:14:52.12 - 00:14:56.38 44
critical for aircraft engines Ansys provides
-
00:14:56.38 - 00:14:58.17 18
a workflow for the
-
00:14:58.27 - 00:15:02.53 41
assessment of both hot air anti icing and
-
00:15:02.53 - 00:15:04.32 22
electrothermal deicing
-
00:15:04.32 - 00:15:08.40 43
systems you can simulate ice buildup if the
-
00:15:08.40 - 00:15:09.22 10
water runs
-
00:15:09.31 - 00:15:13.39 37
past the protected zone and also more
-
00:15:13.39 - 00:15:15.02 25
importantly visualize the
-
00:15:15.11 - 00:15:19.19 44
ice buildup as you can see in this animation
-
00:15:19.19 - 00:15:19.37 2
or
-
00:15:19.37 - 00:15:24.37 44
melting as shown here in the animation below
-
00:15:28.45 - 00:15:32.32 42
And one last capability I'm going to cover
-
00:15:32.32 - 00:15:33.27 10
is process
-
00:15:33.35 - 00:15:37.23 42
compression robust design and optimization
-
00:15:37.23 - 00:15:40.41 39
which addresses an important initiative
-
00:15:40.50 - 00:15:44.37 40
to get faster to market and optimize the
-
00:15:44.37 - 00:15:45.58 19
product performance
-
00:15:45.58 - 00:15:49.60 45
We offer scripting at the tool as well as the
-
00:15:49.69 - 00:15:53.81 43
workflow level to fully automate the design
-
00:15:53.81 - 00:15:54.55 9
processes
-
00:15:54.55 - 00:15:58.68 41
Ansys optiSLang has advanced optimization
-
00:15:58.68 - 00:16:00.42 17
and robust design
-
00:16:00.51 - 00:16:01.62 12
capabilities
-
00:16:01.62 - 00:16:06.06 43
We offer the reduced order model generation
-
00:16:06.06 - 00:16:07.65 17
at various levels
-
00:16:07.74 - 00:16:12.19 37
from a simple response surface ROM to
-
00:16:12.19 - 00:16:12.98 15
detailed 3D ROM
-
00:16:13.08 - 00:16:17.53 45
or even dynamic ROM which can be used for the
-
00:16:17.53 - 00:16:19.50 20
transient phenomenon
-
00:16:22.70 - 00:16:26.75 23
I would like to wrap my
-
00:16:26.86 - 00:16:30.07 28
talk by repeating that Ansys
-
00:16:30.07 - 00:16:35.32 38
is providing a proven solution for gas
-
00:16:35.32 - 00:16:35.56 8
turbines
-
00:16:35.56 - 00:16:38.80 48
and among the organazations use simulation based
-
00:16:38.80 - 00:16:39.96 16
digital twin and
-
00:16:40.03 - 00:16:43.28 44
field meta models for predictive maintenance
-
00:16:43.28 - 00:16:44.29 14
of their fleet
-
00:16:44.29 - 00:16:48.15 40
a gas turbine OEM leverage simulation to
-
00:16:48.15 - 00:16:50.30 29
excellent product development
-
00:16:50.39 - 00:16:54.25 42
improve product quality and reduce testing
-
00:16:54.25 - 00:16:54.43 4
time
-
00:16:54.43 - 00:16:58.34 34
And many companies use simulations
-
00:16:58.34 - 00:17:01.38 41
to increase performance by increasing the
-
00:17:01.38 - 00:17:02.88 25
turbine inlet temperature
-
00:17:02.88 - 00:17:06.72 42
These stories you can read in more details
-
00:17:06.72 - 00:17:07.32 9
the links
-
00:17:07.41 - 00:17:11.26 40
to these stories are provided in the gas
-
00:17:11.26 - 00:17:12.46 18
turbine collateral
-
00:17:12.54 - 00:17:14.77 27
which is part of this booth
-
00:17:14.77 - 00:17:18.27 45
If you have any questions on what I presented
-
00:17:18.27 - 00:17:18.50 2
or
-
00:17:18.58 - 00:17:22.09 45
anything else relevant to gas turbines please
-
00:17:22.09 - 00:17:23.02 11
let us know
-
00:17:23.10 - 00:17:26.60 41
through the chat or Q&A window after this
-
00:17:26.60 - 00:17:27.62 16
presentation you
-
00:17:27.62 - 00:17:31.92 43
can also use the chat function of the booth
-
00:17:31.92 - 00:17:35.58 42
and either me or one of my many colleagues
-
00:17:35.58 - 00:17:35.74 5
which
-
00:17:35.82 - 00:17:39.49 42
are subject matter expert for gas turbines
-
00:17:39.49 - 00:17:40.62 16
around the world
-
00:17:40.71 - 00:17:42.42 22
will reply to you live
-
00:17:42.42 - 00:17:46.83 43
Finally enjoy the rest of your time at this
-
00:17:46.83 - 00:17:47.13 5
booth
-
00:17:47.23 - 00:17:51.65 46
and Simulation World we are here to chat with
-
00:17:51.65 - 00:17:52.04 3
you