Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube
Spontaneous ignition presents a significant hazard in high-pressure hydrogen storage and transportation. However, fundamental processes governing spontaneous ignition at the microscopic scale, such as transport models and ignition initiation, are not fully explained. In this paper, OpenFOAM is emplo...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25008081 |
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| author | Gang Luo Wenping Zhang Zixuan Yang Lijing Zhang Jinfeng Zhang |
| author_facet | Gang Luo Wenping Zhang Zixuan Yang Lijing Zhang Jinfeng Zhang |
| author_sort | Gang Luo |
| collection | DOAJ |
| description | Spontaneous ignition presents a significant hazard in high-pressure hydrogen storage and transportation. However, fundamental processes governing spontaneous ignition at the microscopic scale, such as transport models and ignition initiation, are not fully explained. In this paper, OpenFOAM is employed to study three different transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube. The validity of the present numerical system is confirmed by comparing the numerical and experimental pressure. The results show that transport models have significant impacts on spontaneous ignition. The simulation discover two different ignition modes brought by the different transport models and the flame quenching in the tube. The transport model has been demonstrated to significantly influence the mixing of hydrogen and oxygen within the boundary layer, as well as ignition and flame development: viscous transport models can assist in the hydrogen-oxygen mixing at the boundary layer and reduce the critical burst pressure. In contrast, the inviscid transport model can generate more intense turbulence and multiple mushroom-shaped flames under the influence of Rayleigh-Taylor instability. |
| format | Article |
| id | doaj-art-d3f2b39b27b0467593e9b94a09c2b82c |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-d3f2b39b27b0467593e9b94a09c2b82c2025-08-20T03:31:28ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310654810.1016/j.csite.2025.106548Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tubeGang Luo0Wenping Zhang1Zixuan Yang2Lijing Zhang3Jinfeng Zhang4College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China; Zhejiang College of Security Technology, Department of Emergency and Technology, Zhejiang, 325016, China; Zhejiang Academy of Emergency Management Science and Technology, Zhejiang, 310000, ChinaZhejiang College of Security Technology, Department of Emergency and Technology, Zhejiang, 325016, ChinaZhejiang College of Security Technology, Department of Emergency and Technology, Zhejiang, 325016, ChinaCollege of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China; Corresponding author. College of Safety Science and Engineering, Nanjing University of Technology, Nanjing, 211816, China.Zhejiang Academy of Emergency Management Science and Technology, Zhejiang, 310000, China; Corresponding author. Zhejiang Emergency Management Science Research Institute, hangzhou, 310000, China.Spontaneous ignition presents a significant hazard in high-pressure hydrogen storage and transportation. However, fundamental processes governing spontaneous ignition at the microscopic scale, such as transport models and ignition initiation, are not fully explained. In this paper, OpenFOAM is employed to study three different transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube. The validity of the present numerical system is confirmed by comparing the numerical and experimental pressure. The results show that transport models have significant impacts on spontaneous ignition. The simulation discover two different ignition modes brought by the different transport models and the flame quenching in the tube. The transport model has been demonstrated to significantly influence the mixing of hydrogen and oxygen within the boundary layer, as well as ignition and flame development: viscous transport models can assist in the hydrogen-oxygen mixing at the boundary layer and reduce the critical burst pressure. In contrast, the inviscid transport model can generate more intense turbulence and multiple mushroom-shaped flames under the influence of Rayleigh-Taylor instability.http://www.sciencedirect.com/science/article/pii/S2214157X25008081Transport modelOpenFOAMSpontaneous ignitionBoundary layer |
| spellingShingle | Gang Luo Wenping Zhang Zixuan Yang Lijing Zhang Jinfeng Zhang Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube Case Studies in Thermal Engineering Transport model OpenFOAM Spontaneous ignition Boundary layer |
| title | Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| title_full | Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| title_fullStr | Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| title_full_unstemmed | Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| title_short | Transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| title_sort | transport models for predicting spontaneous ignition of pressurized hydrogen released into a tube |
| topic | Transport model OpenFOAM Spontaneous ignition Boundary layer |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25008081 |
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