Session: 02-09-02 Extreme Loading and Responses 2

Paper Number: 81305

81305 - Blast Loading Profile of Gaseous Hydrogen in Confined Space Under Various Leak Conditions 

As environmental regulations get strict, the production and consumption of hydrogen gas are expected to gradually increase. Therefore, safety studies related hydrogen facilities are eessential. Compared to the existing hydrocarbon fuel, the chemical properties of hydrogen cause its flame propagation speed and high flammability. In the case of ships, there are enclosed compartment because of the equipment and purpose. There is a high risk if leaks occur within an enclosed space more than open space. When operating a hydrogen ship, it is exposed to the risk of hydrogen gas leakage and hydrogen explosion, it can cause fatal damage to ship rescue and life. Hydrogen explosion loading profile changes according to leak characteristics. But Related studies of explosion load profile on hydrogen leakage condition were not almost conducted. In this study, we applied the computational fluid dynamics method to conduct a numerical study on the leakage behavior of hydrogen gas on leak condition and compared these numerical study results with an experiment. The leak height and leak rate were selected as an important parameter. Experiment and CFD simulation of the hydrogen gas dispersion behavior in a closed space was conducted. The flammable regions were investigated as a function of the leakage characteristics and time. Hydrogen explosion loading profile according to leak characteristics were also investigated.

Presenting Author: Seonjin Kim Pusan national university

Authors:

Seonjin Kim Pusan national university
Hyun Ho Lee Pusan National University
Soung Woo Park The Korea Ship And Offshore Research Institute
Dae Yu Baeg Pusan National University
Jeong Hwan Kim The Korea Ship And Offshore Research Institute
Jung Kwan Seo Pusan National University, The Korea Ship And Offshore Research Institute