叶栅气动弹性离散涡数值仿真──Ⅱ．数值试验  

NUMERICAL SIMULATION FOR AEROELASTICITY IN TURBOMACHINES WITH VORTEX METHOD Ⅱ.NUMERICAL TESTS

作　　者：吴文权[1] 西斯托 

机构地区：[1]上海机械学院,美国斯蒂文思理工学院

出　　处：《工程热物理学报》1994年第4期372-377,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：某于文献［１］中所提出的叶栅气动弹性离散涡数值仿真方法，对叶栅气动弹性进行了一系列数值试验。这些试验包括无阻尼、有阻尼工况。井包括一系列不同的来流攻角试验。为了使其非线性本徵得到充分发展，每一种工况都进行了长时间的计算。试验结果进行了后处理，分别得出了叶片振动位移和叶片所受非定常激发力的频谱。结果呈现出一定规律性，例如随着攻角的增加，传播夫速响应频率是下降的。With the method suggested in the first part of this paper[1] , a series of numerical tests for the aeroelasticity in turbomachines were presented including the without and with damping factor respectively. The incidence study was also carried out. In order to understand the non-linear characteristics of the phenomena, for each test, the calculation was taken place with a large number of time steps. The post-processing was completed to obtain the spectra for the displacement and the lift force. Some valuable results were obtained, such as: the frequency of the propagating stall response will be decreased, if the incidence increases:there is a peak value on the spectrum , when the incidence is equal to about 60°, and it means that the frequency of the propagating stall is closed to the natural frequency of the elasticity system.

关 键 词：气动弹性 离散涡 叶轮机械 数值试验 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]