悬式多孔材料构件对液体晃荡影响的数值研究  

Numerical investigation of effect on sloshing by hanging porous part

作　　者：王晨屹 邹昶方 袁晓楠 丁盛 缪泉明 Chen-yi Wang;Chang-fang Zou;Xiao-nan Yuan;Sheng Ding;Quan-ming Miao(School of Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Jiangsu Institute of Marine Resources Development,Lianyungang 222005,China;Ciel&Terre(Shanghai)New Energy Technology Co.,Ltd.,Shanghai,200050,China)

机构地区：[1]江苏海洋大学海洋工程学院,连云港222005 [2]江苏省海洋资源开发研究院,连云港222005 [3]夏尔特拉(上海)新能源科技有限公司,上海手200050

出　　处：《水动力学研究与进展（A辑）》2022年第5期625-632,共8页Chinese Journal of Hydrodynamics

基　　金：江苏省研究生实践创新计划项目(SJCX21_1486);江苏省海洋资源开发研究院开放基金项目(JSIMR202009)。

摘　　要：液舱晃荡是LNG船等液货船设计环节的一个关键问题。有效抑制液舱中液货晃荡引起的冲击压力,对提高船体结构的安全性而言十分重要。该文将多孔特性融入可调节的悬挂式构件中,并通过CFD研究这种复合式制荡方法对液舱中液货晃荡状态的影响。研究结果表明:在合适的孔隙率下,相比于传统的实心构件,该复合式方法能进一步地抑制晃荡,且多孔材料构件受到的流体载荷更小。在静止自由液面附近,构件向下偏移时,其对流体的阻尼作用增强使得其制荡效果进一步提升,但构件受到的流体载荷将增加。Sloshing is a key problem in the design of liquid cargo ships such as LNG ships. Effectively suppressing the impact pressure caused by liquid sloshing in the tank is to improve the safety of the structure. In this paper, the porosity characteristic is combined with the adjustable hanging part and effects of this composite anti-sloshing method on sloshing states are studied by CFD. The results show that compared with the traditional solid part, the composite method with appropriate porosity can further suppress the sloshing, and the load acting on the hanging porous part induced by sloshing liquid is smaller.The damping effect is enhanced when the porous part near the static free surface moves downward, this leads to the further improvement of the anti-sloshing effect, but the load acting on the part increases.

关 键 词：制荡 冲击压力 复合式方法 阻尼效应 

分 类 号：U663.85[交通运输工程—船舶及航道工程]