Focusing of strong shock waves reflected from concave surfaces

Numerical investigation of the influence of the reflector form upon the maximum gas pressure while reflected shock wave is focusing has been fulfilled. Wedge and cylindrical reflector surfaces were studied. It was noted that ratio of maximum pressure to pressure behind of plane reflected shock wave becomes constant when intensity of incident wave exceeds certain value. Analysiz of the influence of the wedge angle and bottom plane surface upon the focusing label was performed. Practical recommendations for using of such reflectors for ignition of flammable gases are given.