Citation

You T, Zhang J, Wang C, Cao W. Beijing Hangkong Hangtian Daxue Xuebao 2011; 37(5): 610-614.

Copyright

(Copyright © 2011, Beijing hang kong hang tian da xue xue bao bian ji bu)

DOI

unavailable

PMID

unavailable

Abstract

During water-exit of underwater vehicle, the violent change of flow field is very complex. In order to investigate the variation of hydrodynamic load, the water-exit of underwater vehicles was simulated by a viscous flow solver with homogeneous multiphase flow model and cavitaion model. The effect of different head shape and pitching angle on the water-exit flow field was analyzed by the numerical method. The analysis result indicates that the head shape with stronger cavitation capability, which maintains local cavity, can cause more severe flow field change and produce massive pressure on the hull of vehicle. The result also indicates the flow field of water-exit process with pitching angle is asymmetric which forms the powerful moment applied on the vehicle. And the pitching angle has a great impact on the variation of moment.