AN INCREASE IN THE AMPLITUDE OF PRESSURE WAVES IN A VAPOR LIQUID-MIXTURE WITH A BUBBLE STRUCTURE

The peculiarities of propagation of strong pressure waves in a vapor-l iquid medium with bubble structure are investigated. It is found exper imentally that an incident shock wave in such a medium can be transfor med into a strong solitary pressure pulse significantly greater in amp litude than the initial wave. Reasons for generation of such a pulse a re analyzed. Results of the experiments in vapor-liquid and vapor-freo n media are presented, as well as a high-speed photogram of both vapor bubble behavior and changes in the void fraction for shock waves of v arious intensities.