基于当前海浪谱的甲板上浪数值模拟  

Numerical simulation of green water based on measured spectrum of ocean wave

作　　者：石博文[1] 刘正江[1] 吴明[2] 

机构地区：[1]大连海事大学航海学院,辽宁大连116026 [2]海军大连舰艇学院航海系,辽宁大连116018

出　　处：《大连海事大学学报》2016年第3期31-36,43,共7页Journal of Dalian Maritime University

摘　　要：基于CFD方法建立三维黏性流数值波浪水池,采用边界条件造波法生成基于Wa Mo SⅡ实测的海浪环境,采用VOF方法捕捉自由面,通过求解刚体运动学方程模拟船舶的纵摇、垂荡和横摇三自由度耦合运动.在此基础上,实现了船舶在高海况下以不同浪向角航行时的甲板上浪数值模拟.通过数值计算,预报了DTMB5512船模不同浪向角下的甲板上浪频率,这与势流理论方法计算结果相符,验证了本文方法的可信度.A 3D viscous numerical wave tank was established based on computational fluid dynamics（ CFD） method,and the boundary conditions of wave method were used to generate wave environment based on measured spectrum from Wa Mo SⅡ. The free surface was captured by the volume of fluid（ VOF） method. The pitch,heaving and rolling coupled motions were simulated by solving the kinematics equations for rigid body. On this basis,the numerical simulation of green water for ship sailing in huge waves with different encounter angles was achieved. The frequency of green water for DTMB5512 ship model in irregular waves under different encounter angles was predicted,which is consistent with results of theoretical calculation,and that demonstrates the reliability of the proposed method.

关 键 词：甲板上浪 数值水池 纵摇-垂荡-横摇耦合运动 计算流体力学(CFD) 

分 类 号：N945[自然科学总论—系统科学] U661.32[交通运输工程—船舶及航道工程]