Stabilization of an oblique detonation wave by a wedge: A parametric numerical study

The result of an unsteady analysis of the conditions leading to a wedge-tri ggered detonation wave in a premixed hydrogen-air supersonic flow is presen ted. The configuration of interest here corresponds to a delayed oblique de tonation wave (ODW), resulting from an oblique shock wave (OSW) transition. Different types of steady and unsteady configurations are evidenced numeri cally. The computed conditions for the self-ignition and stationary solutio ns that are obtained are discussed from the point of view of kinematic and quasi-steady arguments. The results of the calculations are examined in the light of the available experimental data. (C) 2000 by The Combustion Insti tute.