Full-scale simulation and analysis of self-propulsion performance of CRP-propelled high speed underwater vehicles

Chinese Journal of Ship Research - - 第一页 -

HUANG Yongsheng1,2,YANG Chenjun1,2,DONG Xiaoqian1,2 1 State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China 2 Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China In order to numerically predict the self-propulsion factors of high speed underwater vehicles equipped with Contra-Rotating Propellers (CRP),[Methods] RANS modeling approaches are developed for vehicle resistance,self-propulsion and CRP open-water simulation. In terms of resistance and open-water performance,the modeling accuracy are validated by comparisons with model experiments. Based on quasi-steady and unsteady simulations of a high speed underwater vehicle at full scale,the self-propulsion factors are analyzed and compared. The comparison of the numerical and experimental results at the model scale indicates that the simulation error margin of vehicle resistance is less than 3% ,while those of CRP thrust and torque are less than 2% and 4% respectively. The numerically simulated full-scale resistance is 3% lower than that predicted by the model test data. The self-propulsion factors yielded from full-scale RANS simulations are all reasonable in magnitude. The self-propulsion factors yielded from the quasi-steady and unsteady models differ by less than 2% indicating that the quasi-steady model is an economical choice for engineering applications. present modeling approaches are capable of supplying self-propulsion factors for CRP design with reasonable accuracy,and are expected to enhance design accuracy and work efficiency. speed underwater vehicle; Contra-Rotating Propellers (CRP); self-propulsion; full-scale;RANS;Computational Fluid Dynamics(CFD)

Abstract:[Objectives] [Conclusions]The Key words:high [Results]

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