三维跨音速阻力的差分计算

A Finite Difference Method for Three-Dimensional Transonic Wave Drag

讨论了跨音速波阻力传统计算方法的不足 ,采用差分法 ,应用轴向大扰动、横向小扰动、柱座标系下的三维跨音速扰动速势方程和在物面周线的切向座标系下建立的物面边界条件 ,建立了可适用于轴向局部大扰动绕轴均匀和不均匀分布的物体跨音速波阻力的计算方法 ,算例数值结果与实验值吻合良好 .同时 。

A finite difference method,which is based on the three-dimensional transonic small disturbance(axial large disturbance) potential equation in cylindric coordinate,is used to compute the three-dimensional transonic wave drag. The difference between the numerical results and the experiment results are discussed in this paper.The numerical results of the transonic wave drag are coincident well with the experiment results.