华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：37-41,5.DOI:10.13245/j.hust.240548
基于黏性等效的船舶顶浪运动降阶预报方法
Reduced-order prediction method of ship motion in head waves based on viscosity equivalence
摘要
Abstract
To solve the issues that inviscid-flow model could simulate fast but inaccurate and viscous-flow model had high accuracy but low efficiency,the viscous equivalence reduced-order prediction method for seakeeping assessment was proposed.First,this method was based on a forced motion with amplified amplitude to quickly obtain the characteristics between ship damping and motion amplitude.Then,according to the principle of viscous equivalence and the motion state in real time,the corrected damping of inviscid-flow model was adjusted.To verify the effectiveness of this method,a towing tank experiment was conducted on the DTMB 5415 ship model in head waves.Results show that the pitch response error predicted by this method is less than 6.2%,and the heave response error is less than 15.6%.In terms of simulation time,the simulation efficiency of this method is more than 10 times higher than that of traditional viscous-flow model.关键词
耐波性/顶浪/降阶模型/黏性阻尼/阻尼修正Key words
seakeeping/head waves/reduced-order model/viscous damping/damping correction分类
交通工程引用本文复制引用
姜宜辰,董宇,张贺,李嘉文..基于黏性等效的船舶顶浪运动降阶预报方法[J].华中科技大学学报（自然科学版）,2024,52(4):37-41,5.基金项目
国家自然科学基金资助项目(52001043,51639003) （52001043,51639003）
中央高校基本科研业务费资助项目(3132021124,DUT20TD108) （3132021124,DUT20TD108）
辽宁省"兴辽英才"计划资助项目(XLYC1908027). （XLYC1908027）
