KINETIC AND GAZDYNAMIC REASONS OF ACCIDENTAL EXPLOSIONS OF HYDROGEN

The work has been done in the system of equations, which takes into account 21 elementary act in the system hydrogen + air. The work studies the conditions which lead to trigger system for the second and third limit trigger lines for pressure, which should be implemented for the shock waves. Source status for system hydrogen + air was taken: P1 = 1 atm, T1 = 300 K and T1 = 600 K. We have defined the induction periods of ignition depending on the intensity leaning wave. This has been done depends on the results of kinetic equations. We have set out the minimum longitudinal and transverse system size, which can cause ignition after the shock-wave, depending on its intensity. We have shown that explosive processes in uneven-heated mixture can consistently grow from hot areas to cold. The work has studied the ignition in the pin, which is formed between hydrogen and air when the system with high-pressure hydrogen gas is depressurizing. We have received the ignition conditions which depend on the size of the pressure of hydrogen leaks in the system.