Numerical validation of a hydrogen leakage and dispersion experiment considering ship kinetic characteristics
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Hydrogen leaks in enclosed areas, such as hydrogen fuel storage rooms, can lead to fire and explosion accidents. Recognizing these potential hazards, the Ministry of Oceans and Fisheries introduced the "Provisional Standards for Hydrogen Fuel Cell Facilities on Ships,” which requires the number and location of gas detectors inside the fuel cell area of a ship to be determined through computer analysis or physical diffusion tests. However, the application of hydrogen leakage tests in actual ships has economic and safety limita-tions. Moreover, previous studies have faced challenges in validating numerical simulations that consider ship motion. Therefore, this study aims to develop and validate a computational fluid dynamics (CFD) model based on previous experiments regarding the effects of ship motion on hydrogen dispersion. After comparing the experimental and numerical results for all scenarios, the hydrogen con-centration predictions were found to be similar, with a difference within 15%. The significance of this study lies in offering a more practical and economical method for determining the optimal location of hydrogen gas detectors in a real ship environment.
Abstract
Hydrogen leaks in enclosed areas, such as hydrogen fuel storage rooms, can lead to fire and explosion accidents. Recognizing these potential hazards, the Ministry of Oceans and Fisheries introduced the "Provisional Standards for Hydrogen Fuel Cell Facilities on Ships,” which requires the number and location of gas detectors inside the fuel cell area of a ship to be determined through computer analysis or physical diffusion tests. However, the application of hydrogen leakage tests in actual ships has economic and safety limita-tions. Moreover, previous studies have faced challenges in validating numerical simulations that consider ship motion. Therefore, this study aims to develop and validate a computational fluid dynamics (CFD) model based on previous experiments regarding the effects of ship motion on hydrogen dispersion. After comparing the experimental and numerical results for all scenarios, the hydrogen con-centration predictions were found to be similar, with a difference within 15%. The significance of this study lies in offering a more practical and economical method for determining the optimal location of hydrogen gas detectors in a real ship environment.
참고문헌 (19)
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