The aerodynamic performance and dynamic response of two cars in overtaking maneuver under crosswind were investigated using a multi-car two-way coupling method. The coupling was achieved by exchanging aerodynamic forces obtained by computational fluid dynamic and vehicle dynamic responses acquired by multi-body dynamics in real time. The change rules of the aerodynamic force, moment, yaw angle, and lateral displacement of overtaking and overtaken cars were revealed on the basis of coupling computation. The coupling effect between aerodynamics and dynamics and the interplay between overtaking and overtaken cars were also illustrated. Moreover, the necessity of the two-way coupling was verified. Final results indicated that the posture of the body and the lateral space of the two vehicles are crucial to the stability of the vehicles during the overtaking maneuver, and the interaction between the aerodynamic forces and the dynamic response should be considered.

采用多车两向耦合方法研究了两车在侧风下超车时的气动性能和动力响应。通过实时交换通过计算流体动力学获得的空气动力和通过多体动力学获得的车辆动力学响应来实现这种耦合。在耦合计算的基础上，揭示了超车和超车时空气动力，力矩，偏航角和横向位移的变化规律。还说明了空气动力学与动力学之间的耦合效应以及超车和超车之间的相互作用。此外，验证了双向耦合的必要性。