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浙江大学学报(工学版)
浙江大学学报(工学版)
机械与能源工程     
考虑流固耦合的管道爆炸后果预测与分析
杜洋, 马利, 郑津洋, 张帆, 张安达
1.浙江大学 化工机械研究所,浙江 杭州 310027
2.浙江工业大学 固体力学研究所,浙江 杭州 310014
3.浙江大学 流体动力与机电系统国家重点实验室,浙江 杭州 310027
4.浙江大学 高压过程装备与安全教育部工程研究中心,浙江 杭州 310027
Consequences prediction and analysis of pipe explosion considering fluid-structure interaction
DU Yang, MA Li, ZHENG Jin-yang, ZHANG Fan, ZHANG An-da
1. Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China;
2. Institute of Solid Mechanics, Zhejiang University of Technology, Hangzhou 310014, China;
3. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China;
4. Engineering Research Center of High Pressure Process Equipment and Safety, MOE, Zhejiang University, Hangzhou 310027, China
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摘要：

针对管道爆炸后果模拟中存在的伴随变形与断裂的流固耦合问题,提出一种计及计算稳定性的流固耦合算法,对在内部气体爆炸作用下的管道动态断裂及爆炸流场发展进行耦合仿真.采用单元删除技术并植入应变率-应变双变量失效准则来模拟管道的裂纹扩展,将模拟得到的管道断裂形貌及压力历程与试验结果进行对比验证.分析管道爆炸的后果,并将管道外峰值压力的模拟值与现有方法的计算值进行对比.结果表明：考虑流固耦合效应时管道外2个测点的峰值压力分别为不考虑该效应时的83.1%和62.2%.相比难以计及爆炸流场与管道相互作用的半经验模型和传统计算流体力学方法,所提出的方法可以更加合理地预测管道内气体爆炸的后果.
Abstract:

A stability-based coupling approach was proposed to solve the fluid-structure interaction (FSI) problem encountered in the consequences modeling of pipe explosion. By applying this approach, the propagation of blast wave and the dynamic fracture of pipe were simulated synchronously. Element deletion technique and the bivariate failure criterion for high-strain-rate conditions were employed to model the dynamic crack growth of pipe. The simulated pressure histories in the pipe and final fracture patterns were compared and validated with the experimental data. The consequences of explosion in pipes were analyzed； the simulated peak pressures out of the pipe were compared with the results calculated by existing methods. Results show that the two predicted peak pressures with  considering the FSI effect are 83.1% and 62.2% of those without considering the FSI effect. The proposed method can more rationally predict the consequences of explosion occurring in pipes compared with semi-empirical models and traditional computational fluid dynamics (CFD) methods where the interaction between blast wave and pipe cannot be taken into account.
出版日期: 2017-03-01
CLC:  O 383.3  
基金资助:

国家重点研发计划资助项目(2016YFC0801200)； 国家自然科学基金资助项目(51275455)
通讯作者: 郑津洋, 男, 长江学者,特聘教授. ORCID: 0000-0002-7246-8767.     E-mail: jyzh@zju.edu.cn
作者简介: 杜洋(1991—), 男, 博士生, 从事动态断裂与爆炸安全研究. ORCID: 0000-0002-9673-6324. E-mail: du.yang.0918@163.com
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杜洋, 马利, 郑津洋, 张帆, 张安达. 考虑流固耦合的管道爆炸后果预测与分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2017.03.001.

DU Yang, MA Li, ZHENG Jin-yang, ZHANG Fan, ZHANG An-da. Consequences prediction and analysis of pipe explosion considering fluid-structure interaction. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2017.03.001.

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