Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles
In the context of hydrogen-based energy storage systems, the safeguarding against spontaneous ignition during high-pressure hydrogen release is of paramount importance. This study delves into the thermal safety and management technologies pertinent to such systems by numerically investigating the ef...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-04-01
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| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1383759/full |
| _version_ | 1797230402084012032 |
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| author | Xuejin Zhou Jiaojiao Jing Chen Chen Le He |
| author_facet | Xuejin Zhou Jiaojiao Jing Chen Chen Le He |
| author_sort | Xuejin Zhou |
| collection | DOAJ |
| description | In the context of hydrogen-based energy storage systems, the safeguarding against spontaneous ignition during high-pressure hydrogen release is of paramount importance. This study delves into the thermal safety and management technologies pertinent to such systems by numerically investigating the effects of pipeline geometry on the risk of spontaneous ignition. Employing Large Eddy Simulation (LES) coupled with detailed chemical kinetics and a linear eddy model, the research assesses the impact of different pipe angles and burst pressures on ignition behavior. The simulations are validated against experimental data, ensuring the veracity of the findings. The results demonstrate a significant interplay between the ignition propensity and both the geometrical configuration of the pipeline and the pressure of hydrogen release. Notably, the emergence and interaction of transverse waves in pipe bends are revealed to amplify mixing processes, generating vortices that elevate the temperature and promote a conducive environment for chemical reactions leading to stable flame propagation. The ignition is shown to occur predominantly near the stoichiometric mixture ratio, suggesting a narrow ignition region. These insights are vital for enhancing the safety protocols and thermal management strategies of hydrogen-based energy storage systems, paving the way for safer and more efficient energy solutions. |
| first_indexed | 2024-04-24T15:27:55Z |
| format | Article |
| id | doaj.art-9815bc5f11db4be48867e2230d7fd4a9 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-24T15:27:55Z |
| publishDate | 2024-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-9815bc5f11db4be48867e2230d7fd4a92024-04-02T05:24:08ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2024-04-011210.3389/fenrg.2024.13837591383759Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different anglesXuejin Zhou0Jiaojiao Jing1Chen Chen2Le He3College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, ChinaCollege of Mechanical Engineering and Automation, Huaqiao University, Xiamen, ChinaCollege of Mechanical Engineering and Automation, Huaqiao University, Xiamen, ChinaChina Nuclear Power Design Co., Ltd., Shenzhen, ChinaIn the context of hydrogen-based energy storage systems, the safeguarding against spontaneous ignition during high-pressure hydrogen release is of paramount importance. This study delves into the thermal safety and management technologies pertinent to such systems by numerically investigating the effects of pipeline geometry on the risk of spontaneous ignition. Employing Large Eddy Simulation (LES) coupled with detailed chemical kinetics and a linear eddy model, the research assesses the impact of different pipe angles and burst pressures on ignition behavior. The simulations are validated against experimental data, ensuring the veracity of the findings. The results demonstrate a significant interplay between the ignition propensity and both the geometrical configuration of the pipeline and the pressure of hydrogen release. Notably, the emergence and interaction of transverse waves in pipe bends are revealed to amplify mixing processes, generating vortices that elevate the temperature and promote a conducive environment for chemical reactions leading to stable flame propagation. The ignition is shown to occur predominantly near the stoichiometric mixture ratio, suggesting a narrow ignition region. These insights are vital for enhancing the safety protocols and thermal management strategies of hydrogen-based energy storage systems, paving the way for safer and more efficient energy solutions.https://www.frontiersin.org/articles/10.3389/fenrg.2024.1383759/fullspontaneous ignitionbent pipesPressurized hydrogenlarge eddy simulationdetailed chemistry |
| spellingShingle | Xuejin Zhou Jiaojiao Jing Chen Chen Le He Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles Frontiers in Energy Research spontaneous ignition bent pipes Pressurized hydrogen large eddy simulation detailed chemistry |
| title | Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| title_full | Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| title_fullStr | Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| title_full_unstemmed | Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| title_short | Physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| title_sort | physics of pressurized hydrogen spontaneous ignition in pipes containing bends of different angles |
| topic | spontaneous ignition bent pipes Pressurized hydrogen large eddy simulation detailed chemistry |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1383759/full |
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