LNG船舶球形货舱风阻力的数值模拟

杨林家*a; 朱鹏飞b

doi:10.16411/j.cnki.issn1006-7736.2015.02.006

大连海事大学学报 >

2015 , Vol. 41 >Issue 2: 35 - 40

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2015.02.006

交通运输工程

LNG船舶球形货舱风阻力的数值模拟

杨林家^*a ,
朱鹏飞^b

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(大连海事大学 a.航海学院; b.研究生院，辽宁大连 110626)

杨林家*（1972-），男，副教授， E-mail：yanglinjia@126.com.

收稿日期: 2014-11-11

修回日期: 2014-11-22

网络出版日期: 2015-06-07

基金资助

交通运输部交通应用基础研究项目 ( 2012-329-225-090).

收起

Numerical simulation of LNG carrier spherical tank’s wind resistance

YANG Lin-jia^*a ,
ZHU Peng-fei^b

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(a. Navigation College;b. Graduate School, Dalian Maritime University, Dalian 110626,China)

Received date: 2014-11-11

Revised date: 2014-11-22

Online published: 2015-06-07

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摘要

摘要：为获得LNG船舶更准确的风压分布和更多的风场细节，只对LNG船舶的货舱风阻进行了数值分析，忽略了船体以及其他上层建筑部分。选用RNG k-ε湍流模型和大涡模拟方法两种数值模拟方法对均匀风场中的LNG船舶球形货舱进行了数值模拟。为验证数值方法和网格划分的合理性，对均匀风场中的半球体进行了数值模拟，将计算结果与风洞试验的数据进行了比较，与试验结果得到了很好的吻合。然后对LNG船舶球形货舱的绕流场和风压分布进行了分析。研究发现，大涡模拟方法对漩涡流动的模拟有较好的效果。

关键词： LNG船舶; 球形货舱; 风阻力; 数值模拟; RNG k-ε湍流模型; 大涡模拟

本文引用格式

杨林家^*a , 朱鹏飞^b . LNG船舶球形货舱风阻力的数值模拟[J]. 大连海事大学学报, 2015 , 41(2) : 35 -40 . DOI: 10.16411/j.cnki.issn1006-7736.2015.02.006

Abstract

In order to obtain more accurate wind pressure dis-tribution and more details of the wind field，only the wind re-sistance on the tank of LNG carrier was analyzed，other super-structures and ship hull were not included in this study． Asimulation was performed for air flow around the sphericaltank of LNG carrier in uniform wing field by using the ＲNGk － ε turbulence model and large eddy simulation method． Fortesting the validity of the numerical analysis method and meshgeneration，a simulation of air flow around single hemispherewas carried out，and the result was in good agreement withtest in the wind tunnel． Then flow field and wind pressure dis-tribution were discussed．Ｒesults show that the large eddysimulation appears to have advantage in study of unsteady tur-bulent flow．

Key words： LNG carrier; spherical cargo; wind resistance; numerical simulation; RNG k-&epsilon; turbulence model; large eddy simulation

参考文献

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