【摘要】 基于FLUENT软件求解雷诺平均N-S方程,选用S-A湍流模型,对某型载货车真实外形的复杂绕流场进行了数值模拟,给出了车体表面压力分布、流场结构及空气动力阻力,探讨了减小阻力的技术措施。该方法具有网格数量小、计算结果精准度较高、满足工程设计需要等优点。更多还原

【Abstract】 The complex flow around camion was numerically simulated with the three-dimensional incompressible RANS and the S-A turbulence model in this paper, the pressure distribution, flow characteristics and aerodynamic drag of the camion were obtained. The results show with good precision on small grids amount. Finally, the ways to decrease aerodynamic drag were indicated.更多还原