[1]毕明树,任婧杰,沙 嵬,等.热侵袭下易燃液化气体储存安全的关键问题[J].常州大学学报(自然科学版),2020,32(04):1-9.[doi:10.3969/j.issn.2095-0411.2020.04.001]
　BI Mingshu,REN Jingjie,SHA Wei,et al.Study on the Storage Safety of Flammable Liquefied Gas Under Thermal Attack[J].Journal of Changzhou University(Natural Science Edition),2020,32(04):1-9.[doi:10.3969/j.issn.2095-0411.2020.04.001]
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热侵袭下易燃液化气体储存安全的关键问题()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第32卷
期数:
2020年04期
页码:
1-9
栏目:
特约稿
出版日期:
2020-07-28

文章信息/Info

Title:
Study on the Storage Safety of Flammable Liquefied Gas Under Thermal Attack
文章编号:
2095-0411(2020)04-0001-09
作者:
毕明树1; 任婧杰1; 沙 嵬1; 程 磊1; 石剑云2
(1. 大连理工大学 化工学院,辽宁 大连 116023; 2. 大连交通大学 交通运输工程学院,辽宁 大连 116028)
Author(s):
BI Mingshu1;  REN Jingjie1;  SHA Wei1;  CHENG Lei1;  SHI Jianyun2
(1. School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China; 2. School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian 116028, China)
关键词:
液化气体;  分层翻滚;  爆沸;  耦合响应
Keywords:
liquefied gas;  stratification and rollover;  explosive boiling;  coupling response
分类号:
X 937
DOI:
10.3969/j.issn.2095-0411.2020.04.001
文献标志码:
A
摘要:
从液化气体储罐受热侵袭后固体材料与罐内介质的热流固耦合响应角度,对液化气体储存安全涉及到的分层翻滚演化机制、储存容器的热固耦合响应行为和液化气体的过热爆沸喷射机制3个关键问题展开讨论。结合可视化实验和热流固耦合响应数值模拟,分析了罐内介质翻滚过程中的分层失稳循环模式、罐体的局部高温区分布特征和开裂行为以及非均匀过热爆沸的两相流膨胀喷射和罐顶动压响应规律。研究发现:分层失稳机制与初始浮力比密切相关; 罐顶高温区温度分布影响储罐的开裂形式; 储罐开裂后的爆沸过程呈现两相流间歇膨胀特征。
Abstract:
In this paper, three key issues concerning the safety of the liquefied gas storage were discussed in terms of the thermo-hydro-solid coupling response of the solid materials and the medium in the liquefied gas storage tank after the thermal invasion. Combined with the visualization experiment and the numerical simulation of the thermo-hydro-solid coupling response, the layered instability circulation mode during the roll over process of the medium in the tank, the local high temperature distribution characteristics and cracking behavior of the tank, as well as the two-phase flow expansion injection and the dynamic pressure response law of the tank top are analyzed. It is found that the mechanism of stratification instability is closely related to the initial buoyancy ratio, the temperature distribution in the high temperature region of the tank top affects the cracking form of the tank, and the explosion boiling process after the cracking of the tank presents the characteristics of intermittent expansion of two-phase flow.

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备注/Memo

备注/Memo:
收稿日期:2020-01-02。
基金项目:国家自然科学基金资助项目(51077140,51176022,51506025); 高等学校博士学科点专项科研基金(20090041110037); 爆炸科学与技术国家重点实验室开放课题(KFJJ17-02M); 火灾科学国家重点实验室开放课题(HZ2018-KF13)。
作者简介:毕明树(1962—),男,内蒙古赤峰人,博士,教授。E-mail:bimsh@dlut.edu.cn
引用本文:毕明树, 任婧杰, 沙嵬, 等. 热侵袭下易燃液化气体储存安全的关键问题[J]. 常州大学学报(自然科学版),2020,32(4):1-9.
更新日期/Last Update: 2020-07-30