| 基于流固耦合理论的混流式叶片动力学分析 | |
| 张丽霞 ; 张伟 ; 潘际銮 ; ZHANG Lixia ; ZHANG Wei ; PAN Jiluan | |
| 2010-05-13 ; 2010-05-13 | |
| 关键词 | 流固耦合 模态分析 混流式水轮机 疲劳设计校核 fluid-structure interaction modal analysis Francis turbine fatigue design TK730 |
| 其他题名 | Dynamic analysis of a Francis turbine based on the fluid-structure interaction theorem |
| 中文摘要 | 为了避免机组发生共振,以某一混流式转轮叶片为对象,提出叶片在空气和在工作流道中的动态特性方程,采用有限元方法建立叶片在空气中和工作流道中的频率计算模型和方法,得出了流体对叶片固有频率的影响系数。结果表明:叶片在空气中和在水介质中振型基本相似,但随叶片结构及振动形式的改变,叶片固有频率发生变化。该方法对于流体激振力的研究和叶片的疲劳设计校核具有一定的参考意义。; The dynamics equation for a Francis turbine blade in air and water was used to analyze blade fatigue failures caused by forced resonance.The finite element method was used to calculate the blade's natural frequencies in air and during various operating conditions and the influence coefficients which are related to data given in the literatures.The results indicate that the mode shapes in air are similar to those during operation,but that the blade's natural frequencies vary with the blade structure and the vibration modes.Therefore,the method can be used for resonance force analyses and the blade fatigue reliability designs. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/30855]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 张丽霞,张伟,潘际銮,等. 基于流固耦合理论的混流式叶片动力学分析[J],2010, 2010. |
| APA | 张丽霞,张伟,潘际銮,ZHANG Lixia,ZHANG Wei,&PAN Jiluan.(2010).基于流固耦合理论的混流式叶片动力学分析.. |
| MLA | 张丽霞,et al."基于流固耦合理论的混流式叶片动力学分析".(2010). |
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