基于仿生学原理设计的轮-叶复合式仿生推进装置具备良好的水面交界处托举性能，当仿生叶轮完全下潜时其托举性能大大减小。通过构造、添加一种挡板装置，实现仿生叶轮水下托举性能的显著提升。基于有限体积法对仿生叶轮及其挡板装置水动力性能进行数值模拟，研究不同挡板结构参数对仿生叶轮水下托举力的影响及其力学形成机理。研究结果表明：通过添加挡板装置可实现仿生叶轮水下托举力的显著提升，挡板与仿生叶轮顶端间隙越小，其自身夹角越大，产生的托举性能越明显。%The wheel-blade compound vehicle has perfect lift performance on the water interface based on the bionic mechanism.However,it hardly has lift ability when it is under water.To improve its lift performance under water is important for extending the diving function to a certain special vehicle.This paper puts forward a baffle device to realize a significant improvement of the lift performance.By applying the finite volume method to make the simulation model of the bionic impeller and baffle,the mechanics forming mechanism and the variety rules of the dynam performance are analyzed.The research results indicate that the lift performance is perfect while the distance between the impeller top and the baffle is small and the baffle angle is increasing.
展开▼
