Numerical investigation of the hydrogen leakage location on the hydrogen distribution in a closed chamber

Security is one of the most important problems facing the wider use of hydrogen and the increased risk of release into the closed environments. The existence of hydrogen gas in submarine's battery well is also accidental. One way to reduce this risk is to identify the behavior of hydrogen in different situations. For this reason, In this paper, transient behavior of the hydrogen gas in leakage and diffusion in a closed cylinder chamber is simulated numerically. Hydrogen Volume Fraction (HVF) extracted during 60 s leakage and up to 100 minutes after stopping the leak and compared with experimental data of the Shebeko work , in 2 , 50 and 100 minutes after stopping the leak. Moreover, location of the leakage parameter, investigated numerically. Studies have shown that high-risk regions of flammability are formed in top of the room, quickly and with an increase in height of release hole, hazard regions has become broader and becomes more lasting.