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采用非结构混合网格方法数值求解NS方程,对发动机进排气效应进行了模拟。详细介绍了进、排气边界条件的设定,通过对DLR-F4标模和TPS风洞试验模型模拟,验证了程序的可靠性。通过对某典型翼吊式民机的外形的计算,分析了进排气效应对机翼气动载荷的影响。计算结果表明,本文采用的计算方法可以较好地预测大飞机与动力装置之间的干扰影响,具有较好的工程应用价值。
The unstructured hybrid grid method is used to solve the NS equation numerically and the engine intake and exhaust effects are simulated. The conditions of inlet and exhaust boundary conditions are introduced in detail. Through the simulation of DLR-F4 model and TPS wind tunnel test, the reliability of the program is verified. Through the calculation of the appearance of a typical wing-type civil aircraft, the influence of intake and exhaust effects on the aerodynamic loading of the wing is analyzed. The calculation results show that the calculation method adopted in this paper can predict the interference effect between large aircraft and power plant well and has good engineering application value.