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提出了一种小喉道曲率半径喷管跨音流动的有限元分析方法。它从欧拉方程出发,利用最小二乘法建立元素的有限元方程。计算随着时间推进并利用逐块扫描的方法求解。计算了一个双曲型收扩喷管和两个小喉道曲率半径喷管的跨音速流场。计算的结果与解析解及实验结果进行了对比,符合良好。
A small throat radius of curvature of the nozzle transonic flow finite element analysis method. Starting from the Euler equations, it establishes the finite element equations of the elements using the least square method. Calculations are advancing over time and solved using block-by-block scans. The transonic flow field of a hyperbolic convergent and divergent nozzle and two small throat radii of curvature are calculated. The calculated results are in good agreement with the analytical solutions and experimental results.