Effect of Wave Phase on Hydrodynamic Characteristics of Underwater Vehicle out of Water

doi:10.3969/j.issn.1000-1093.2014.03.010

Abstract

Abstract: To explore how wave and cavity affect the mechanic property of underwater launched vehicle, the hydrodynamic characteristics of vehicles are researched through numerical simulation, the physical mechanism is analyzed for the development of cavitation-geometrical features near the water level with changeable launching wave phase, and the related flow field data is presented. The results show that the variation of phase leads to the shearing motion of particles close to the free surface, of which intensity and direction are the important factors to cause the asymmetrical structure of cavity on the vehicle shoulder. The asymmetrical feature contributes to an apparent diversity of mechanical load between the upstream and downstream faces, which has an adverse effect on the vehicle attitude during launching, consequently influencing the hit accuracy.

Key words: fluid mechanics, underwater launch, wave, cavity, hydrodynamic force

CLC Number:

TJ762.4

ZHU Kun， CHEN Huan-long， LIU Le-hua， YANG Xiao-guang， ZHANG Ji-hua. Effect of Wave Phase on Hydrodynamic Characteristics of Underwater Vehicle out of Water[J]. Acta Armamentarii, 2014, 35(3): 355-361.

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