变截面管内激波串的预测理论及其验证

现有等直管内激波串的预测理论并未考虑截面积变化以及壁面传热等条件,因此发展了考虑壁面温度、附面层分离和截面积变化的激波串理论分析模型,并与实验结果进行了对比。研究表明,该模型可快速计算隔离段参数的沿程变化,激波串前缘位置的差值在26%以内。此外,对变截面管道激波串进行了理论分析和数值模拟,研究发现数值解和理论解的差值为11%。 

Prediction theory and validation of shock train in variable section duct

The effect of wall heat transfer and variable section cant be analyzed in the current prediction theory of shock train in the straight pipe. Therefore,theoretical analysis model of shock train considering the effect of wall temperature, boundary layer separation and variable section was developed, and the result was compared with the experimental data. The study showed that this model can quickly calculate the isolator parameters change along the axial direction and the error in predicting the leading edge of shock train was within 26%. Whats more, the theoretical analysis and numerical simulation of shock train in the varialle section duct were studied, indicating that the difference of analytical and numerical solutions was 11%.