单桨吊舱推进器水动力性能数值预报方法研究

摘要

论文对目前应用较多的拖式、推式单桨吊舱推进器形式，在统一的理论框架下，应用涡格法和边界元法，建立了其定常水动力性能的数值计算方法。该方法采用涡格法求解螺旋桨叶片性能，采用升力面理论非升力体面元法计算吊舱包和支架性能，叶片、吊舱包和支架三者的影响通过迭代计算计入；进行了拖式、推式吊舱推进器定常水动力性能的数值预报，其与空泡水筒试验结果的比较表明，论文建立的数值方法能够较好地预报拖式及推式吊舱推进器的定常水动力性能。%Based on the vortex lattice method and the boundary element method, a numerical method is proposed in this paper for predicting steady hydrodynamic performance of pulling- and pushing-type of podded propulsors. Blades of propeller are calculated with the vortex lattice method, while the pod and its strut are calculated with the boundary element method for non-lifting bodies. Hydrodynamic interactions between the propeller and the pod are treated via iterative calculations. A real case computation has been carried out and the results agree well with those obtained from the experiments carried out in a cavitation tunnel. It can be concluded that the computation method presented in this paper is effective, reliable and practical.