TY - JFULL AU - Mohamed H. Elhsnawi and Mesbah M. Salem and Saleh B. Mohamed PY - 2013/11/ TI - Numerical Simulation of High Pressure Hydrogen Emerges to Air T2 - International Journal of Mechanical and Mechatronics Engineering SP - 2093 EP - 2096 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/17236 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 82, 2013 N2 - Numerical simulation performed to investigate the behavior of the high pressure hydrogen jetting of air. High pressure hydrogen (30–40 MPa) was injected to air at atmospheric pressure through 2mm orifice. Numerical simulations were performed with Kiva3V code with 2D axisymmetric geometry. Numerical simulations showed that auto ignition of high pressure hydrogen to air are possible due to molecular diffusion. Auto ignition was predicted at hydrogen-air contact surface due to mass and energy exchange between high temperature hydrogen and air heated by shock wave. ER -