A summary of experiments of shock wave interactions with spherical soap bubbles and cylindrical soap columns filled with helium performed in the Shock Wave Research Center at Tohoku University is presented. Sequential holographic interferograms of soap bubbles impinged by small-scale blast waves created by explosion of 10 mg weight silver azide pellets are presented. The standoff distance between micro-explosives and the bubbles center is about 40 mm and the shock overpressure was about 2 MPa. Helium filled soap columns of 40 mm diameter and 60 mm in height were placed in a 60 mm × 150 mm shock tube. Their interaction with shock wave was intensively visualized by using holographic inter-ferogram at atmospheric conditions. It is found that the irregular interfacial deformation observed are just three-dimensional vortices viewed from the side.
展开▼
