摘要
本文充分利用势流理论方法和CFD技术各自的优势建立了一种能够准确地再现甲板上浪现象的数值模拟方法。基于Fluent软件平台的二次开发,实现了浮体在波浪中遭受甲板上浪作用的数值模拟。船体的运动规律通过势流理论计算给定,在上浪现象模拟计算时,船体的运动采用移动网格技术实现。文中就迎浪状态下的运动FPSO模型所遭遇的甲板上浪进行了三维数值模拟研究,甲板上水体流动及其对结构物的冲击载荷与试验结果吻合良好。研究表明,该方法对上浪机理能给出较为清晰的描述,为进一步分析预报甲板上浪对浮体结构物的破坏作用提供了基础。
A numerical method to simulate the phenomenon of the green water on deck is established by taking advantage of the virtues of the potential flow method and CFD technique. Numerical programs developed based on the platform of the commercial software Fluent were used to numerically model the green water occurrence on the floating structures exposed to waves. A technique of dynamic mesh is specially introduced in a 3-D numerical wave tank to simulate the green water occurrence on an oscillating FPSO model in head waves. Numerical results of water flow on deck and green water loads on deck structure agree well with the corresponding experimental data. It is shown that the present method can be applied to predict and analyze the impact forces on floating structures due to green water.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2008年第1期7-14,共8页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金(50639020
50579034)
863科技项目(2006AA332Z)
关键词
甲板上浪
冲击载荷
CFD
势流
移动网格
green water, impact loads, CFD, potential flow, dynamic mesh
