Session: FSI-04-02 FSI Design for Industry and Renewable Energy Transport - 2

Paper Number: 106868

106868 - CFD Study on High-Pressure Hydrogen Leakage and Explosion of Hydrogen Energy Tram in Tunnel 

Hydrogen energy is gradually being applied to vehicles. Compared with hydrogen fuel cell cars, hydrogen fuel cell trams have a larger size and the corresponding space of the tram tunnel is also narrower. Therefore, the consequences of hydrogen leakage and explosion in the tunnel of the hydrogen energy tram is different. Using computational fluid dynamics (CFD) method to study the leakage fire situation caused by the accidental opening of the pressure relief device (PRD) of the high-pressure hydrogen storage cylinders on the hydrogen energy tram in the tunnel. Two scenarios were simulated: the jet fire formed by the immediate ignition of the high-pressure hydrogen release vertically upward and the explosion created by the ignition of a hydrogen cloud after a period of leakage and diffusion. The influence of the height of the tunnel ceiling and the ambient wind speed were discussed. After ignition, the danger area of fire was defined by temperature field and pressure wave which would cause injury to human body and facilities. The simulation results indicate that forced convection in the tunnel can significantly reduce the combustion area size and pressure peak of the explosion. In order to reduce the impact of the fire, it is recommended that the tunnel should be adequately ventilated longitudinally.

Presenting Author: Tiantian Tian Zhejiang University

Presenting Author Biography: I am a graduate student at Zhejiang University and my main research direction is hydrogen safety.

Authors:

Tiantian Tian Zhejiang University
Chen Lu Zhejiang University
Wenlong Ha ZheJiang HeBang Security Technology Co., Ltd.
Yiming Zhao Zhejiang University
Zhengli Hua Zhejiang University
Wenzhu Peng Zhejiang University
Chaohua Gu Zhejiang University