采用基于S-A湍流模型的脱体涡(DES)方法,数值模拟研究了三维轮胎部件外流场。通过非定常计算,将所得结果与相关文献对比分析。结果显示,该方法能够准确地模拟轮胎的非定常特性,后轮处能够很好地捕捉马蹄涡,其范围与文献接近,且起轮胎压力系数图能够和文献基本相似。 The outflow eddy current (DES) method based on the S-A turbulence model was used to simulate the outflow field of 3D tire components. Through unsteady calculations, the results obtained are compared with the relevant literature. The results show that this method can accurately simulate the unsteady behavior of the tire, and the horseshoe vortex can be well captured at the rear wheel. The range of the method is close to that of the literature, and the tire pressure coefficient can be basically similar to the literature.