Numerical study of roll motion of a 2-D floating structure in viscous flow  

作　　者：Lifen CHEN Liang SUN Jun ZANG A.J.HILLIS A.R.PLUMMER 

机构地区：[1]WEIR Research Unit,Department of Architecture and Civil Engineering,University of Bath [2]Department of Mechanical Engineering,University of Bath

出　　处：《Journal of Hydrodynamics》2016年第4期544-563,共20页水动力学研究与进展B辑（英文版）

基　　金：the financial support of the University of Bath and China Scholarship Council(CSC)for her Ph.D.study

摘　　要：In the present study,an open source CFD tool,Open FOAM has been extended and applied to investigate roll motion of a 2-D rectangular barge induced by nonlinear regular waves in viscous flow.Comparisons of the present Open FOAM results with published potential-flow solutions and experimental data have indicated that the newly extended Open FOAM model is very capable of accurate modelling of wave interaction with freely rolling structures.The wave-induced roll motions,hydrodynamic forces on the barge,velocities and vorticity fields in the vicinity of the structure in the presence of waves have been investigated to reveal the real physics involved in the wave induced roll motion of a 2-D floating structure.Parametric analysis has been carried out to examine the effect of structure dimension and body draft on the roll motion.In the present study,an open source CFD tool,Open FOAM has been extended and applied to investigate roll motion of a 2-D rectangular barge induced by nonlinear regular waves in viscous flow.Comparisons of the present Open FOAM results with published potential-flow solutions and experimental data have indicated that the newly extended Open FOAM model is very capable of accurate modelling of wave interaction with freely rolling structures.The wave-induced roll motions,hydrodynamic forces on the barge,velocities and vorticity fields in the vicinity of the structure in the presence of waves have been investigated to reveal the real physics involved in the wave induced roll motion of a 2-D floating structure.Parametric analysis has been carried out to examine the effect of structure dimension and body draft on the roll motion.

关 键 词：floating normalized rectangular capable viscous vorticity draft modelling rotating hydrodynamic 

分 类 号：O352[理学—流体力学]