Research of Podded Propulsors with Varied Geometry in Viscous Flow
摘要
Based on the model test of podded propulsor in straight forward motion,the paper presents the results of the effects of geometric parameters on the propulsive characteristics of podded propulsors in viscous flow. Three main geometrical parameters,i.e. pod diameter,strut distance from the propeller plane,and the maximum thickness of strut are studied with systematically varied geometry while the parameters of propeller blades are fixed. The RANS approach is adopted to study the steady performance using the Fluent software package. While the interactions of the propeller blades with the pod and strut are time-dependent by nature,the mixing plane model is employed to predict the steady performance. In consideration of the complexity,the research does not deal with the effects of the combination of such three main parameters.