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给出了三维Euler/N-S方程数值模拟悬停状态旋翼流场的方法和模型。在空间离散方法上分别采用Jame-son中心差分格式、Van Leer矢通量分裂格式、AUSM格式3种方法,同时加入了Van Albada限制器,并应用了嵌套网格方法。文中采用Hole-Map方法来确定洞边界,采用Inverse-Map方法来搜寻贡献单元。最后给出了旋翼桨叶表面压力分布的计算结果,并与实验数据进行了对比,证明以上3种空间离散格式在旋翼流场计算中的准确性。
The method and model for numerical simulation of three-dimensional Euler / N-S equations for hovering rotor flow field are given. In the method of spatial discretization, Jame-son central difference scheme, Van Leer vector flux splitting scheme and AUSM scheme are used respectively. At the same time, Van Albada limiter is added and nested grid method is used. The Hole-Map method is used to determine the hole boundary and the Inverse-Map method is used to search for the unit of contribution. Finally, the calculation results of the pressure distribution on the rotor blade surface are given and compared with the experimental data to prove the accuracy of the above three kinds of spatial discretization schemes in the rotor flow field calculation.