基于CFD的斜航船舶浮态数值预报  

CFD Theory Based Floating State Prediction of Oblique Ship Motion

作　　者：邵江明 应业炬[1] ZHOU Qi SUN Xiangjie 

机构地区：[1]浙江海洋学院船舶与海洋工程学院,浙江舟山316022 [2]Zhoushan Wonderful Marine Design CO.LTD.,zhoushan316021 [3]School of Naval Architecture &Ocean Engineering,Harbin Engineering University

出　　处：《浙江海洋学院学报（自然科学版）》2015年第6期559-564,共6页Journal of Zhejiang Ocean University(Natural Science Edition)

摘　　要：目前涉及斜航船舶的数值模拟计算鲜有在模拟过程中考虑到船舶浮态的影响,然而浮态变化对水动力数值计算精度的影响是不容忽视的。基于此,文章以系列60船斜航运动(傅汝德数Fr=0.316,斜航角β=10°)为算例,采用重叠网格技术处理斜航船的大幅运动问题,通过耦合求解船舶六自由度运动方程和流体流动方程的方法,计算出了斜航船的升沉量、纵倾和横倾角度。结果显示,考虑浮态的数值预报结果与爱荷华大学的试验数据相比误差基本控制在10%以内,体现出该数值计算预报方法具有较强的工程实用性。The oblique ship motion calculation is rarelyconsidering the effects of ship floating state. However, the change of floating state can not be ignored due to it＇s great effect on numerical calculation precision.In this paper, the oblique motion of Series 60 ship model with Fr=0.316, yaw angleβ=10°is taken as example.The running attitudes including the sinkage, trim and heel are obtained by coupling the 6-DOF equations of ship motion with the Reynolds Averaged Navier-Stokes（RANS） equations. The overset grid method is adopted to deal with the sinkage, trim and heel in large amplitude. Comparisons between the numerical results with I-WOA（The University of Iowa） experimental data are made, and it is observed that the prediction error can be controlled bellow 10%,which successfully validates the applicability and efficiency of the proposed method in engineering applications.

关 键 词：斜航 浮态计算 重叠网格 数值模拟 

分 类 号：U661.3[交通运输工程—船舶及航道工程]