基于数值模拟的棱形液舱晃荡砰击载荷尺寸敏感性分析研究  

Dimension Sensitivity Analysis of Octagon Tank on Sloshing-Induced Slamming Load Based on Simulation

作　　者：陈世文[1] 杨志勋[1] 阮诗伦[1] 周茂夫 岳前进[1] 

机构地区：[1]大连理工大学运载工程与力学学部工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《海洋工程装备与技术》2016年第1期39-45,共7页Ocean Engineering Equipment and Technology

基　　金：国家科技重大专项(2011ZX05026-006-06)

摘　　要：为了降低经济成本,液货围护系统的容积随着船体尺寸向超大型化发展。超大型浮式液化天然气生产储卸运载装备(FLNG)储液舱内会出现剧烈的液体晃荡。晃荡砰击载荷是超大型薄壁液舱设计中的关键问题之一,而液舱尺寸的选择是整个设计过程中的关键环节。基于晃荡砰击载荷,对三维棱形液舱的主尺寸开展了敏感性分析。首先,基于有限体积数值方法,对多载液率进行数值实验研究,分析得到30%为危险载液率。进而在液舱主尺寸可设计范围内,分别开展相关参数的敏感性分析。研究结果可为超大型储液舱主尺度设计提供参考依据。In order to reduce the economic costs, the volume of cargo tank in the giant floating liquefied natural gas facility （FLNG） has been increasing with the size of vessel, which causes severe liquid sloshing. So sloshing-induced slamming is one of the key issues in the structure design of large-scale tank, and, it is an important part to select the overall dimension of tank during design process. Dimension sensitivity of octagon tank on sloshing toad is analyzed. Firstly, through finite volume numerical method, numerical experiments with a series of filling level are performed to find out the most dangerous filling level, which is 30 %. Based on this, sensitivity regularity of parameters is analyzed within the design scope of tank size. The results could provide reference for main dimension design of largescale storage tank.

关 键 词：液舱尺寸 晃荡砰击载荷 敏感性分析 GTT液舱 数值模拟 

分 类 号：TE83[石油与天然气工程—油气储运工程] U663.85[交通运输工程—船舶及航道工程]