Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships
Hydrogen is a promising environmentally friendly fuel with the potential for zero-carbon emissions, particularly in maritime applications. However, owing to its wide flammability range (4–75%), significant safety concerns persist. In confined spaces, hydrogen leaks can lead to explosions, posing a r...
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2025-01-01
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| Online Access: | https://www.mdpi.com/1996-1073/18/2/448 |
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| author | Chang-Yong Lee Sang-Kyun Park |
| author_facet | Chang-Yong Lee Sang-Kyun Park |
| author_sort | Chang-Yong Lee |
| collection | DOAJ |
| description | Hydrogen is a promising environmentally friendly fuel with the potential for zero-carbon emissions, particularly in maritime applications. However, owing to its wide flammability range (4–75%), significant safety concerns persist. In confined spaces, hydrogen leaks can lead to explosions, posing a risk to both lives and assets. This study conducts a numerical analysis to investigate hydrogen flow within hydrogen storage rooms aboard ships, with the goal of developing efficient ventilation strategies. Through simulations performed using ANSYS-CFX, this research evaluates hydrogen diffusion, stratification, and ventilation performance. A vertex angle of 120° at the ceiling demonstrated superior ventilation efficiency compared to that at 177°, while air inlets positioned on side-wall floors or mid-sections proved more effective than those located near the ceiling. The most efficient ventilation occurred at a velocity of 1.82 m/s, achieving 20 air exchanges per hour. These findings provide valuable insights for the design of safer hydrogen vessel operations. |
| format | Article |
| id | doaj-art-8dd73041da20442a8ac047b8d00dffc9 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-8dd73041da20442a8ac047b8d00dffc92025-01-24T13:31:31ZengMDPI AGEnergies1996-10732025-01-0118244810.3390/en18020448Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in ShipsChang-Yong Lee0Sang-Kyun Park1Department of Maritime Police & Technology, Gangwon State University, Gangneung 25425, Republic of KoreaDivision of Maritime AI & Cyber Security, National Korea Maritime and Ocean University, Busan 49112, Republic of KoreaHydrogen is a promising environmentally friendly fuel with the potential for zero-carbon emissions, particularly in maritime applications. However, owing to its wide flammability range (4–75%), significant safety concerns persist. In confined spaces, hydrogen leaks can lead to explosions, posing a risk to both lives and assets. This study conducts a numerical analysis to investigate hydrogen flow within hydrogen storage rooms aboard ships, with the goal of developing efficient ventilation strategies. Through simulations performed using ANSYS-CFX, this research evaluates hydrogen diffusion, stratification, and ventilation performance. A vertex angle of 120° at the ceiling demonstrated superior ventilation efficiency compared to that at 177°, while air inlets positioned on side-wall floors or mid-sections proved more effective than those located near the ceiling. The most efficient ventilation occurred at a velocity of 1.82 m/s, achieving 20 air exchanges per hour. These findings provide valuable insights for the design of safer hydrogen vessel operations.https://www.mdpi.com/1996-1073/18/2/448hydrogen diffusionhydrogen leakageventilationshipboard hydrogen storagecomputational fluid dynamicsceiling apex angle |
| spellingShingle | Chang-Yong Lee Sang-Kyun Park Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships Energies hydrogen diffusion hydrogen leakage ventilation shipboard hydrogen storage computational fluid dynamics ceiling apex angle |
| title | Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships |
| title_full | Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships |
| title_fullStr | Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships |
| title_full_unstemmed | Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships |
| title_short | Numerical Study on the Characteristics of Hydrogen Leakage, Diffusion and Ventilation in Ships |
| title_sort | numerical study on the characteristics of hydrogen leakage diffusion and ventilation in ships |
| topic | hydrogen diffusion hydrogen leakage ventilation shipboard hydrogen storage computational fluid dynamics ceiling apex angle |
| url | https://www.mdpi.com/1996-1073/18/2/448 |
| work_keys_str_mv | AT changyonglee numericalstudyonthecharacteristicsofhydrogenleakagediffusionandventilationinships AT sangkyunpark numericalstudyonthecharacteristicsofhydrogenleakagediffusionandventilationinships |