Modeling of gaseous detonation limits

In view of rocket launch safety and propulsion, the basic processes associated with detonation limits of a gaseous oxyhydrogen mixture have been investigated numerically using a two-dimensional Eulerian hydrodynamic code with a two-step chemical-reaction model. It was demonstrated that the cell size and the critical tube diameter were well correlated in the transition processes, confined to unconfined space. This result was in rough agreement with an existing empirical criterion; i.e., critical channel width must be greater than three times the cell size for successful transmission.