上海交通大学学报

上海交通大学学报（自然版）

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圆柱在波浪中入水的数值模拟

王文华，王言英
  

  1. (大连理工大学 船舶工程学院, 大连 116024)
  • 收稿日期:2009-10-15 修回日期:1900-01-01 出版日期:2010-10-31 发布日期:2010-10-31

Numerical Study on Cylinder Entering Water in Wave

WANG Wenhua,WANG Yanying
  

  1. (School of Naval Architecture and Ocean Engineering, Dalian University of Technology, Dalian 116024, China)
  • Received:2009-10-15 Revised:1900-01-01 Online:2010-10-31 Published:2010-10-31

摘要： 为了研究波浪对圆柱入水过程的影响，采用二维CFD(Computational Fluid Dynamic)方法数值模拟了圆柱在规则波中的入水过程.该方法采用自由液面捕捉法和直角切割网格系统分别处理自由液面和物体动边界，结合推板造波和海绵阻尼消波原理而实现数值造消波，并分析波浪参数(波高、周期和圆柱入水时的波浪相位)对圆柱入水动力特性的影响.以在波浪中的起重船上悬吊圆柱入水作为工程应用实例进行数值模拟，研究不同工况下绳索的张力变化和重物的运动特性.

关键词: 波浪, 圆柱入水, 自由液面捕捉法, 直角切割网格

Abstract: In order to study the influence of wave on water entry of cylinder, a CFD method was presented to numerically simulate the physical process of cylinder vertically entering water in regular wave. In this method, free surface capturing method and Cartesian cut cell mesh system were adopted to treat moving free surface and solid boundary. In combination with the theories of a pistontype wavemaking and sponge damping waveabsorbing, the CFD method was applied in the implementation of numerical wave making and absorbing. Furthermore, the effect of wave parameters (wave height, wave period, wave phase versus cylinder touching free surface, and so on) on the hydrodynamic was analyzed. Finally, the application case of lifting operation from a crane ship in wave was numerically simulated, and the tension variation of wire and motion characteristic of cylinder under different working conditions were mainly studied.

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