海洋工程装备与技术

海洋工程装备与技术 ›› 2016, Vol. 3 ›› Issue (1): 39-45.

• 海洋工程装备设计技术 • 上一篇    下一篇

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

陈世文, 杨志勋, 阮诗伦, 周茂夫, 岳前进   

  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;
  • 收稿日期:2015-11-06 出版日期:2016-02-25 发布日期:2017-11-03
  • 作者简介:陈世文(1989—)，男，硕士研究生，主要从事工程力学方面的研究。
  • 基金资助:
    国家科技重大专项（2011ZX05026-006-06）

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

CHEN Shi-wen, YANG Zhi-xun, RUAN Shi-lun, ZHOU Mao-fu, YUE Qian-jin   

  1. Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, Liaoning 116023, China
  • Received:2015-11-06 Online:2016-02-25 Published:2017-11-03
  • Supported by:
     

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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。

Abstract: 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 load 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 large-scale storage tank.

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