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高超声速气动热数值模拟法向网格准则

DOI: 10.6052/1000-0879-14-046

Keywords: 高超声速,数值模拟,热流,温度梯度,网格准则

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Abstract:

采用数值求解雷诺平均Navier-Stokes方程方法对高超声速钝双锥模型进行了计算,比较了不同法向网格尺度对热流计算的影响,并在此基础上提出了一种适于热流计算的网格准则.研究表明在实际外形的热流计算中,使用过密或过粗的法向网格均不利于得到准确的热流数据;采用该文提出的基于当地温度梯度的法向网格尺度准则可以在保证热流计算精度的同时实现较高的收敛速度.

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