船舶辐射水动力数值预报的精细积分法及改进

杨宗默; 马殿光; 李晓松; 干伟东

doi:10.16411/j.cnki.issn1006-7736.2018.04.004

大连海事大学学报 >

2018 , Vol. 44 >Issue 4: 21 - 27

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.04.004

船舶与海洋工程

船舶辐射水动力数值预报的精细积分法及改进

杨宗默 ,
马殿光 ,
李晓松 ,
干伟东

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(交通运输部天津水运工程科学研究所，天津 300456)

杨宗默（1989-），男，硕士生.

收稿日期: 2018-05-23

修回日期: 2018-07-04

网络出版日期: 2018-07-04

基金资助

中央级公益性科研院所基本科研业务费科研创新基金项目(TKS170216)；天科院科研创新基金项目(基金编号TKS160225).

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Precise integration method and its improvement for numerical prediction of ship radiative hydrodynamics

YANG Zong-mo ,
MA Dian-guang ,
LI Xiao-song ,
GAN Wei-dong

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(Tianjin Research Institute For Water Transport Engineering, M.O.T ,Tianjin 300456，China)

Received date: 2018-05-23

Revised date: 2018-07-04

Online published: 2018-07-04

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摘要

为减小由于大、小时间区域划分不明确导致的三维时域Green函数的数值误差，对小时间区域采用级数展开，对过渡区域及大时间区域采用精细积分法对三维时域 Green 函数进行精细地数值计算. 基于三维时域Green函数求解船舶辐射力，分别对 Wigley 型船和S60型船进行数值计算.结果表明，水动力系数数值计算结果与试验结果及文献结果吻合较好，证明了所建模型的可靠性.

关键词： 船舶; 辐射力; 三维时域Green函数; 精细积分法

本文引用格式

杨宗默 , 马殿光 , 李晓松 , 干伟东 . 船舶辐射水动力数值预报的精细积分法及改进[J]. 大连海事大学学报, 2018 , 44(4) : 21 -27 . DOI: 10.16411/j.cnki.issn1006-7736.2018.04.004

Abstract

To reduce the numerical error of threedimension timedomain Green’s function due to unclear partition between small time computational domain and large time computation domain, the series expansion was adopted in small time computation domain, while the precise numerical calculation of threedimensional timedomain Green’s function was adopted in both transition domain and large time computation domain by using precise integration. Then, the radiation forces for a Wigley hull and a S60 hull were solved respectively based on threedimensional timedomain Green’s function. Results show that the hydrodynamic coefficients and wave exciting forces are in good agreements with both experimental results and published results, which verify the reliability of the proposed model.

Key words： ship; radiation forces; three-dimensional time-domain Green's function; precise integration method

参考文献

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