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发展了二维超燃流场的数值模拟计算程序 ,用来进行高温富油燃气超燃流场的数值计算。数值解法采用了 Mac Cormack预估 -校正两步显式格式求解矢通分裂形式的 N- S方程组 ,湍流模型采用了壁面率修正的 Baldwin- Lomax代数方程模型和用于剪切混合层的普朗特混合长度模型。在超燃计算中 ,应用 C2 H4- O2 两步反应的有限速率化学反应模型 ,模拟高温富油燃气超燃试验的试验状态。计算结果表明 ,在高温富油燃气超燃流场中 ,热量释放较少
The numerical simulation program of two-dimensional hypersonic flow field has been developed for the numerical calculation of the high-temperature rich gas-rich gas flow field. The numerical solution uses Maccormack’s predictive-calibration two-step explicit format to solve the vector N-S equations in the form of a vector. The turbulence model uses the Baldwin-Lomax algebraic equation model with wall-rate correction and the model for shear mixed layers Langte mixture length model. In the calculation of superovulation, the finite-rate chemical reaction model of C2 H4-O2 two-step reaction was used to simulate the experimental state of the high-temperature oil-rich gas test. The calculation results show that there is less heat release in the high-temperature oil-rich gas