摘要
基于数值波浪水池技术,对波浪中高速三体船运动及增阻进行CFD计算研究。控制方程—RANS方程和连续性方程使用有限体积法离散,非线性自由面采用VOF方法处理;在入口边界模拟柔性造波板运动产生入射波,使用位于波浪水池尾部的人工阻尼区消波。首先对规则波顶浪中单个主船体的运动和增阻进行了计算,并与高速细长体理论计算结果进行了比较;随后进行了三体船运动和增阻计算,分析了侧片体对主船体阻力增加的影响。为高速三体船耐波性研究提供了数值工具。
Some research work on CFD computation of ship motions and added resistance in waves for a high speed trimaran is carried out in this paper. The governing equations, Reynolds Averaged Navier-Stokes （RANS） and continuity equations are discretized by finite volume method （FVM）. Volume of fluid （VOF） method is adopted to deal with the nonlinear free surface. The incident waves are generated from the inflow boundary by prescribing a velocity profile resembling flexible flap wavemaker motions, and the outgoing waves are dissipated inside an artificial damping zone located at the rear part of the wave tank. In this paper, the computed results of ship motion and added resistance for the single mainhull in regular heading waves with those computed by 2.5D method as comparison are presented firstly. The computed results for the trimaran are presented then and interaction between main hull and side hulls is analyzed briefly. The work in this paper provides a numerical tool for the study of seakeeping performance of high speed trimarans.
出处
《中国造船》
EI
CSCD
北大核心
2010年第4期1-10,共10页
Shipbuilding of China
关键词
船舶
舰船性能
高速三体船
运动
波浪增阻
CFD计算
ship engineering
high speed trimaran
ship motion
added resistance in waves
CFD computation
