跨音叶栅流动的多级有限元分析
A MULTISTAGE FINITE ELEMENT METHOD FOR TRANSONIC FLOW CALCULATION IN TURBOMACHINERY
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摘要: 将各向异性张力有限单元和Taylor-Galerkin有限元法在多级有限元法的思想下结合起来, 构成了收敛速度和稳定性均较好的适用于跨音流动计算的各向异性多级有限元法。利用这一方法, 基于Euler方程, 研究了平面跨音速叶栅流动, 并与实验结果作了比较。结果表明, 本方法是跨音速计算的强有力手段。Abstract: In the light of the idea of Multistage Finite Element Method,The anisotropic tensor force finite element and the Taylor-Galerkin finite element method have been combined properly into a new method which called anisotropic multistage finite element method.This method is superior in convergence speed and stability and suitable to transonic flow calculations.We applied this method to analyzing the transonic flow in a two dimensional cascade and compared with its experimental data.It is shown that this method is a powerful tool for the transonic flow calculation.
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