Numerical Study of the Shallow-Water Effect on the Hydrodynamic Loads and Wake of a Ship in Oblique Flow  

作　　者：FENG Liang WANG Longsheng ZHANG Yuxin 

机构地区：[1]College of Engineering,Ocean University of China,Qingdao 266404,China [2]Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China

出　　处：《Journal of Ocean University of China》2025年第1期63-74,共12页中国海洋大学学报(英文版)

基　　金：supported by the National Key R&D Plan Project(No.2019YFD0901003)。

摘　　要：When a ship moves in an oblique flow,its hydrodynamic loads and wake characteristics vary substantially from those in straight-ahead motion.This dissimilarity can be even more complex when the ship operates in a seaway of shallow water.In this paper,a numerical analysis of the shallow-water effect on the hydrodynamic forces and wake characteristics of an international ship model,KVLCC2,in oblique flows is conducted.Numerical simulations are performed based on the Reynolds Averaged NavierStokes equation in conjunction with the shear stress transport(SST)k-ωturbulence model.Four relative water depths(h=1.2T,1.5T,3.0T,and 24T;T is the ship draft)and five different drift angles(β=0°,5°,10°,15°,and 20°)are considered.Results reveal the following:i)The shallow-water effect is strong and leads to nonlinear increases in the longitudinal force regardless of drift angles and on the transverse force and yaw moment whenever the drift angle increases.ii)In shallow water,the mean wake fraction is sensitive to the drift angle,and the strength of the aft-body vortex on the leeward side increases.

关 键 词：oblique flow shallow-water effect hull wake computational fluid dynamics 

分 类 号：U661.1[交通运输工程—船舶及航道工程]