Capillary-gravity ship wave patterns  

作　　者：Hui Liang Xiaobo Chen 

机构地区：[1]Deepwater Technology Research Centre(DTRC),Bureau Veritas,Singapore [2]College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Journal of Hydrodynamics》2017年第5期825-830,共6页水动力学研究与进展B辑（英文版）

摘　　要：Ship wave pattern is a fascinating research topic in the fields of marine hydrodynamics and water waves. Within the pure-gravity wave theory, the ship wave pattern composed of transverse waves and divergent waves appearing on the downstream is confined within a sector symmetrical about the ship track with a half-angle 19°28＇. However, when the surface tension is accounted for, the wave pattern is greatly modified especially at a low translating speed. Besides the minimum speed of capillary waves c_（min）= 0.23 m/s below which waves cannot be generated, there is another critical speed c_（div）= 0.45 m/s associated with the disappearance of divergent waves. In the present paper, the wave patterns created by a steadily translating source are studied, and they are examined with the crestlines obtained from the asymptotic analysis.Ship wave pattern is a fascinating research topic in the fields of marine hydrodynamics and water waves. Within the pure-gravity wave theory, the ship wave pattern composed of transverse waves and divergent waves appearing on the downstream is confined within a sector symmetrical about the ship track with a half-angle 19°28＇. However, when the surface tension is accounted for, the wave pattern is greatly modified especially at a low translating speed. Besides the minimum speed of capillary waves c_（min）= 0.23 m/s below which waves cannot be generated, there is another critical speed c_（div）= 0.45 m/s associated with the disappearance of divergent waves. In the present paper, the wave patterns created by a steadily translating source are studied, and they are examined with the crestlines obtained from the asymptotic analysis.

关 键 词：Ship waves wave pattern gravity-dominant waves capillarity-dominant waves 

分 类 号：P731.22[天文地球—海洋科学] TV139.2[水利工程—水力学及河流动力学]