Research on Numerical Simulation of Supercavity Flow Around Underwater Wing-vehicle

XIONG Tian-hong;ZHANG Mu;YI Wen-jun;WANG Zhong-yuan

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    Published By: Journal Of Ballistics

    CN 32-1343/TJ

Journal Of Ballistics ›› 2013, Vol. 25 ›› Issue (4) : 43.

Research on Numerical Simulation of Supercavity Flow Around Underwater Wing-vehicle

  • XIONG Tian-hong1, ZHANG Mu2, YI Wen-jun1, WANG Zhong-yuan2
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Abstract

Based on PISO algorithm and VOF method,the numerical simulation of three-dimensional unsteady supercavitating flow around wing-vehicle was carried out by adopting the cavitation model to simulate mass transfer between gas and liquid,and the N-S equations were discretized by finite volume method.The supercavity shape was calculated,and the comparison between computing results with empirical formula indicates that the numerical results agree well with those of the empirical formula.The influences of cavitation number and empennage structure on supercavity-shape characteristics of underwater vehicle were analyzed.The results indicate that the wing structure has little effect on the supercavitating shape under small cavitation number.The formation of double cavitation shape on vehicle surface as a result of increasing cavitation number will easily cause vehicle to lose stability.This research offers theoretical reference for studies on motion stability of underwater wing-projectiles and supercavity drag reduction characteristics.

Key words

wing-vehicle / cavitation shape / three-dimensional unsteady flow

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XIONG Tian-hong, ZHANG Mu, YI Wen-jun, WANG Zhong-yuan. Research on Numerical Simulation of Supercavity Flow Around Underwater Wing-vehicle. Journal Of Ballistics. 2013, 25(4): 43

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