Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents
Transporting blended hydrogen natural gas through existing natural gas pipeline networks is an important strategy for meeting the growing demand for hydrogen energy. However, gas leakage poses a serious safety concern. This study conducts a large-scale simulation of gas leakage and explosion acciden...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171256 |
| _version_ | 1811692843398332416 |
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| author | Tong, Sirui Li, Xiang Ding, Haoran Shuai, Jian Mei, Yuan Chan, Siew Hwa |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tong, Sirui Li, Xiang Ding, Haoran Shuai, Jian Mei, Yuan Chan, Siew Hwa |
| author_sort | Tong, Sirui |
| collection | NTU |
| description | Transporting blended hydrogen natural gas through existing natural gas pipeline networks is an important strategy for meeting the growing demand for hydrogen energy. However, gas leakage poses a serious safety concern. This study conducts a large-scale simulation of gas leakage and explosion accidents in a hydrogen-doped natural gas station and aims to evaluate the impact of pipeline pressure and leakage direction on the accident consequences. Simulation results indicated that the high pipeline pressure led to more accumulated flammable gas, which caused severer explosion disasters. Within the 100s simulation period, the cumulative volume of the flammable gas cloud reached 2329.80 m3 under 4 MPa pipeline pressure, and the peak explosion overpressure increased by 69.64% compared with the 1 MPa case. Leakage directions also significantly affect the evolution of accidents. Suppose the leakage direction is towards living areas, flammable gas is more likely to accumulate in confined spaces up to 2363.20 m3. The gas explosion will severely damage the building structure with a 17 kPa explosion overpressure and 7 kPa shock wave intensity. Interaction with wind and the disturbance of obstacles also contributed to the flammable gas cloud accumulation, which increased peak values of explosive overpressure. |
| first_indexed | 2024-10-01T06:42:13Z |
| format | Journal Article |
| id | ntu-10356/171256 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:42:13Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1712562023-10-18T01:47:00Z Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents Tong, Sirui Li, Xiang Ding, Haoran Shuai, Jian Mei, Yuan Chan, Siew Hwa School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Computational Fluid Dynamics Leakage Accident Simulation Transporting blended hydrogen natural gas through existing natural gas pipeline networks is an important strategy for meeting the growing demand for hydrogen energy. However, gas leakage poses a serious safety concern. This study conducts a large-scale simulation of gas leakage and explosion accidents in a hydrogen-doped natural gas station and aims to evaluate the impact of pipeline pressure and leakage direction on the accident consequences. Simulation results indicated that the high pipeline pressure led to more accumulated flammable gas, which caused severer explosion disasters. Within the 100s simulation period, the cumulative volume of the flammable gas cloud reached 2329.80 m3 under 4 MPa pipeline pressure, and the peak explosion overpressure increased by 69.64% compared with the 1 MPa case. Leakage directions also significantly affect the evolution of accidents. Suppose the leakage direction is towards living areas, flammable gas is more likely to accumulate in confined spaces up to 2363.20 m3. The gas explosion will severely damage the building structure with a 17 kPa explosion overpressure and 7 kPa shock wave intensity. Interaction with wind and the disturbance of obstacles also contributed to the flammable gas cloud accumulation, which increased peak values of explosive overpressure. The authors would like to thank the Key R & D Plan Project of Zhejiang Province (No.2021C01099) and the Zhejiang Baima Lake Laboratory Co., Ltd. - Chine University of Petroleum - Beijing Strategic Cooperation Science and Technology Special Project (JSYJY-KJFW-2021-022) for financial support. 2023-10-18T01:47:00Z 2023-10-18T01:47:00Z 2023 Journal Article Tong, S., Li, X., Ding, H., Shuai, J., Mei, Y. & Chan, S. H. (2023). Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents. International Journal of Hydrogen Energy. https://dx.doi.org/10.1016/j.ijhydene.2023.08.088 0360-3199 https://hdl.handle.net/10356/171256 10.1016/j.ijhydene.2023.08.088 2-s2.0-85168448736 en International Journal of Hydrogen Energy © 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Computational Fluid Dynamics Leakage Accident Simulation Tong, Sirui Li, Xiang Ding, Haoran Shuai, Jian Mei, Yuan Chan, Siew Hwa Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title | Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title_full | Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title_fullStr | Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title_full_unstemmed | Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title_short | Large-scale transient simulation for consequence analysis of hydrogen-doped natural gas leakage and explosion accidents |
| title_sort | large scale transient simulation for consequence analysis of hydrogen doped natural gas leakage and explosion accidents |
| topic | Engineering::Mechanical engineering Computational Fluid Dynamics Leakage Accident Simulation |
| url | https://hdl.handle.net/10356/171256 |
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