基于CFD/CSD技术的压气机叶片流固耦合及颤振分析

王征; 吴虎; 史亚锋; 杨金广; 蔡晋

基于CFD/CSD技术的压气机叶片流固耦合及颤振分析

1.
西北工业大学动力与能源学院, 西安 710072
2.
西北工业大学机电学院现代设计与集成制造技术教育部重点实验室,西安 710072

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出版历程
- 收稿日期: 2010-04-30
- 修回日期: 2010-07-27
- 刊出日期: 2011-05-28

Fluid-structure interaction and flutter analysis of compressor blade based on CFD / CSD

1.
School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072
2.
The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 针对叶片故障的原因颤振问题,基于计算流体动力学/计算结构力学(CFD/CSD)耦合算法,研究了压气机典型叶片的流固耦合(FSI)问题及颤振特性.使用有限体积法求解非定常三维Navier-Stokes方程和有限元法求解三维结构体模型,在两个求解器间由载荷转换、网格变形传递和同步化方法完成数据交换及求解.以高性能风扇NASA(National Aeronautics and Space Administration) Rotor 67为例,对其工况下的气弹响应进行分析,计算结果与实验数据进行对比,以确认方法的正确性和有效性.结果表明可根据循环功和平均压力分布来分析叶片的颤振机理,从而为压气机稳定性的判定提供重要依据.
- 流固耦合 /
- 颤振特性 /
- 非定常 /
- 气弹响应 /
- 压气机稳定性
Abstract: For the most important flutter problem of turbomachinery blades,the fluid-structure interaction (FSI) problems and flutter characteristic of turbomachinery blades were studied in present paper based on the CFD/CSD (computational fluid dynamics/computational structural dynamics) algorithm.The three-dimensional unsteady Navier-Stokes equations and three-dimensional structural model were solved by the finite volume method and the finite element method,respectively.High accuracy in calculation and data exchange were gained by using load transfer,deformation tracking and synchronization between two solvers.The procedure successfully simulated the aeroelastic responses of a high performance fan rotor,NASA (National Aeronautics and Space Administration) Rotor 67,under a range of operational conditions,and the results were compared with the experiment.The results show that the flutter mechanics of the compressor blade could be illustrated based on the distribution of cycle work and mean pressure,which is helpful to the decision of compressor stability.
- fluid-structure interaction (FSI) /
- flutter characteristic /
- unsteady /
- aeroelastic responses /
- compressor stability

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