Experimental Research on Cavity Evolution Pattern and Trajectory Characteristics in the Water-exit Process of SalvoedRevolving Bodies

doi:10.3969/j.issn.1000-1093.2019.06.013

Abstract

Abstract: In order to study the mutual interference between revolving bodies salvoed underwater in the water-exit process, the experimental research on the water-exit process of revolving bodies is carried out based on high-speed photography. The countors of cavity and revolving bodies are identified and extracted using image processing technology. The hydrodynamic disturbance between the revolving bodies in the water-exit process and the effect of frame velocity are analyzed by comparing the trajectory characteristics of single revolving body and two revolving bodies launched with and without submarine speed. The experimental results show that the low pressure zone formed by the first revolving body makes the cavity inside the second revolving body develops larger in the water-exit process without submarine speed, and the trajectory of the second revolving body deflects to the first revolving body. The cavity evolution rule and the trajectory characteristics of revolving body change in the presence of submarine speed under the action of high pressure at the up-flow side and current scour, the cavity develops towards the back-flow side, and the trajectory of the first revolving body deflects along the flow direction; and the second revolving body is in the wake field of the first revolving body, so the trajectory of the second revolving body still has the attitude and the track deflection to the first revolving body, but its deflection amplitude is relatively smaller than that of the revolving body launched without submarine speed. Key

Key words: revolvingbody, underwatersalvo, cavityevolution, multiphaseflow, trajectorycharacteristics

CLC Number:

TV131.3⁺2

LU Jiaxing， WANG Cong， WEI Yingjie， XU Hao， SONG Wuchao. Experimental Research on Cavity Evolution Pattern and Trajectory Characteristics in the Water-exit Process of SalvoedRevolving Bodies[J]. Acta Armamentarii, 2019, 40(6): 1226-1234.

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第40卷第6期
2019 年6月兵工学报ACTA
ARMAMENTARIIVol.40No.6Jun.2019

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