GENERATION OF AN ENHANCED ACOUSTIC STREAMING IN A BOUNDED SPACE

A procedure to generate enhanced acoustic streaming into a bounded spa ce has been studied. Under continuous ultrasound radiation, it was dif ficult to generate enhanced acoustic streaming in bounded space becaus e of disturbances by reflected waves. Efforts were made to remove the disturbances by adjusting the repeat time of tone bursts of ultrasound . An experimental system has been developed for visualizing acoustic s treaming. As a consequence of experiments, the streaming velocity in t he bounded space has been enhanced by about 2.5 times by using a serie s of tone bursts of ultrasound. (C) 1997 Acoustical Society of America .