PRESSURE WAVES IN A GAS-LIQUID MEDIUM WITH A STRATIFIED LIQUID-BUBBLY MIXTURE STRUCTURE

摘要

Evolution and decay of pressure waves of moderate amplitude in a vertical shock tube filled by a gas-liquid medium with a nonuniform (stepwise) distribution of bubbles over the tube cross section are studied experimentally. The gas-liquid layer has the form, of a ring located near the tube wall or the form of a gas-liquid column located in the center of the tube. It is shown that the nonuniformity of bubble distribution over the tube cross section increases the attenuation rate of pressure waves.