Propagation and intensity of blast wave from hydrogen pipe rupture due to internal detonation |
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| Affiliation: | 1. College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, 266580, China;2. College of New Energy, China University of Petroleum (East China), Qingdao, 266580, China;3. CNPC Tubular Goods Research Institute, Xian, 710077, China;1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;2. Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao, 266590, PR China;3. Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao, 266590, PR China;1. Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany;2. thuba AG, Basel, Switzerland;3. Otto-von-Guericke-Universität Magdeburg, Magdeburg, Germany;1. Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control, College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 210009, China;2. School of Environment and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China;3. School of Materials Engineering, Changshu Institute of Technology, Changshu, 215500, China;4. Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, 123, University Rd., Sec. 3, Douliou, Yunlin, 64002, Taiwan, ROC;5. BASF Corporation, 1609 Biddle Avenue, Wyandotte, MI, 48192, USA;1. Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India;2. Assam Energy Institute, Centre of Rajiv Gandhi Institute of Petroleum Technology, Sivasagar, 785697, Assam, India;3. Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Dhanbad, 826004, Jharkhand, India;1. School of Safety Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China;2. College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, Jiangsu, China;3. Institute of Industry and Trade Measurement Technology, College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, China;4. Zhejiang Engineering Laboratory of Chemicals Safety Testing Technology and Instruments, Hangzhou, China |
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| Abstract: | The coupled fluid-structure-rupture model was developed to study the propagation and intensity of blast wave from hydrogen pipe rupture due to internal detonation. The dynamic rupture of pipe and propagation of blast wave were well coupled together in every timestep during the simulation. The numerical model was validated with experiments in terms of both typical rupture profiles and blast overpressures. Results reveal that crack branching of pipe can dramatically increase the rupture opening rate which controls the intensity and shape of the resultant blast wave. Due to the process of crack initiation and extension, the blast wave out of the pipe first forms and then is strengthened by the subsequent compression waves. This makes the maximum peak overpressure appears at a certain standoff distance above the rupture. Despite consuming some percentages of energy, the dynamic rupture of pipe generally presents positive effects (up to 2–3 times) on the blast wave intensity along the jetting direction due to the convergence effect of rupture opening on the release of internal high-pressure gas. Finally, through defining normalized overpressure and impulse based on the same hydrogen detonation in open spaces, the quantitative influences of pipe rupture on the blast wave intensity in cases of different detonation pressures and standoff distances are clarified. |
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| Keywords: | Hydrogen pipe Dynamic rupture Blast wave Fluid-structure coupling |
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