【摘要】 以旋翼式飞行汽车为对象，开展气动外形减阻优化研究。首先对飞行汽车进行数值计算，通过离散伴随法得到飞行汽车车身表面灵敏度数据，根据流场结果与车身表面灵敏度，确定风阻系数敏感度高的部位，然后通过网格变形技术对选定的优化部位进行参数化设计。运用最优拉丁超立方设计确定试验样本点，采用Kriging空间插值法构建近似模型，通过自适应模拟退火算法对近似模型进行寻优，并将寻优所得到的结果通过数值仿真进行验证。优化模型前后风阻系数由0.298降低至0.270,降低28 conts,减幅达到约9.3%,显著提升了飞行汽车地面模式的气动性能，为飞行汽车车身外形的优化设计提供了指导。更多还原

【Abstract】 Taking the rotary-wing flying car as the research object, the drag reduction and optimization research on its aerodynamic shape is carried out.Firstly, numerical calculations are performed on the flying car, and the surface sensitivity data of the flying car body are obtained through the discrete adjoint method.Based on the flow field results and the body surface sensitivity, the parts with high sensitivity to the wind resistance coefficient are determined.Then, parametric design is carried out on the selected optimization parts through the grid deformation technology.The optimal Latin hypercube design is used to determine the test sample points, the Kriging spatial interpolation method is adopted to construct the approximate model, and the approximate model is optimized by the adaptive simulated annealing algorithm.The results obtained from the optimization are verified through numerical simulation.The wind resistance coefficient of the optimized model is reduced from 0.298 to 0.270,a decrease of 28 conts, with the reduction amplitude reaching approximately 9.3%.This significantly improves the aerodynamic performance of the flying car in the ground mode and provides guidance for the optimal design of the flying car body shape.更多还原