Spectral and statistical analysis of bow wave breaking characteristics of KCS ship  

作　　者：Xin-yi Li Feng-jun Bao Jian-hua Wang De-cheng Wan Jian Xu 

机构地区：[1]Computational Marine Hydrodynamics Lab(CMHL),School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]Ningbo Pilot Station,Ningbo Dagang Pilotage Co.,Ltd.,Ningbo,315100,China [3]China Shipbuilding Ninth Design and Research Institute Engineering Co.,Ltd.,Shanghai,200063,China

出　　处：《Journal of Hydrodynamics》2024年第4期593-608,共16页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.52131102);supported by the Research and Application Demonstration Project of Key Technologies for Safeguarding of Container vessels in Ningbo Zhoushan Port Based on Intelligent Navigation(Grant No.ZJHG-FW-2024-27).

摘　　要：Bow wave breaking is a common phenomenon during ship navigation,especially at a high speed,involving complex physical mechanism such as interface mixing,air entrainment,and jet splashing.This study uses the delayed detached eddy simulation(DDES)turbulence model on the OpenFOAM platform to simulate flow around a KRISO Container Ship(KCS)model for a Froude number of 0.35,examining trim angles of 0°,0.5°,1°.This paper analyzes the statistical and power spectral density(PSD)characteristics of bow wave heights.The analysis shows root mean square(rms)and mean difference between top and bottom views indicate wave breaking.As the trim angle increases,peaks of rms in the bottom view become much higher than that in the top view,reaching 38%at 1°.PSD analysis reveals that resistance and wave height periods differ by no more than 5%,with small-scale structures like jetting and splashing causing non-dominant periodic and high-frequency wave height variations.

关 键 词：Bow wave breaking KRSIO Container Ship(KCS) statistical characteristics analysis spectral analysis 

分 类 号：TV139.2[水利工程—水力学及河流动力学]