不同附体布置下的三体船波浪中运动数值模拟研究  

Numerical simulations of trimaran motion in regular waves with different outrigger layouts

作　　者：刘健宇 段文洋[1] 廖康平 LIU Jian-yu;DUAN Wen-yang;LIAO Kang-ping(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《水动力学研究与进展（A辑）》2021年第6期772-780,共9页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金(51779049,51979053)~~。

摘　　要：三体船船型通常由一个主船体和两个附体所组成,附体的不同布置位置对船舶整体耐波性有显著影响。该文采用三维直角网格计算流体力学程序(CNT-CGCFD),研究了不同附体布置方案下的三体船在规则波中的垂荡与纵摇运动。其中自由液面采用THINC/SW方法进行捕捉,物体表面及运动边界采用IBM方法进行模拟。该文的数值模拟结果与实验值比较结果吻合良好。结果表明附体沿船长方向的不同位置布置对船舶垂荡运动影响较大,沿宽度方向的不同位置布置对垂荡运动影响较小,而纵摇运动对不同附体位置布置的敏感性较低,同时在计算中观测到主体与附体间的水动力干扰现象。Trimaran is composed of a main hull and two outriggers.The layout of outriggers is an important factor in seakeeping performance of trimaran.In this paper,the heave and pitch motion of trimaran in regular head waves with different outrigger layouts are analyzed by using 3 D Cartesian grid CFD solver(CNT-CGCFD).The free surface is captured by THINC/SW(Tangent of Hyperbola for Interface Capturing with Slope Weighting)method,and the structure and moving boundary are simulated by IBM(Immersed Boundary Method).Fairly good agreement is obtained between the numerical simulation results and the experimental results.The results show that the longitudinal position of outriggers has a great effect on heave motion of trimaran,while the transverse position of the outriggers has less effect on heave motion,and the pitch motion is insensitive to the outrigger layout.At the same time,the hydrodynamic interference phenomenon is observed between the main hull and outriggers.

关 键 词：三体船 直角网格 浸没边界法 附体布置 水动力干扰 

分 类 号：O352[理学—流体力学]