采用非贴体笛卡尔网格及有限体积法求解Euler方程的方法对两个模型的气动特性进行了计算,并考虑粘性项对阻力结果进行了修正,将修正后的计算结果与风洞试验值进行对比分析,结果表明:修正后的CFD计算值与风洞试验值吻合较好,验证了在气动设计中笛卡尔网格方法具有计算精度高、求解速度快的特点,适用于气动方案初步设计阶段的实际工程应用。 The aerodynamic characteristics of the two models were calculated by using non-fitted Cartesian grids and the finite volume method to solve the Euler equations, and the viscous term was used to correct the resistance results. The corrected results were compared with the wind tunnel test values The results show that the corrected CFD values ​​are in good agreement with the wind tunnel test values. It is verified that the Cartesian grid method has the advantages of high accuracy and quick solution in aerodynamic design. It is suitable for preliminary design of pneumatic schemes Phase of the actual engineering application.