分区拼接网格算法数值模拟超声速复杂流场

以分区拼接网格数值模拟方法为研究对象,对二阶Godunov方法在拼接网格中流场的数值模拟进行了研究,发展了适用于Godunov格式的通量守恒型算法,结合二阶Godunov有限体积法离散非定常Euler方程,数值模拟了捆绑火箭及航天飞机的超声速流场,计算结果正确描述了流场中的激波相交、反射等干扰特性.

PATCHED GRID METHOD AND NUMERICAL SIMULATION OF SUPERSONIC COMPLEX FLOWS

A new method to simulate flows with patched grids is introduced which is based on second-order Godunov method and Euler equations,and conservation across patch boundaries is satisfied.Using the method,the supersonic flows of bind-rocket and complex flows between two objects are simulated.Computation results are in agreement with experimental data,and describe the complex flows rightly such as the crossing and reflex of shocks.This conservation method with patched grids based on second-order Godunov method and Euler equations is one of effective methods for numerical simulation.