CAVITATION IN A V-SLOT - (MEASUREMENT OF IMPULSIVE PRESSURE)

In the present experiment, a single cavitation bubble is produced in a V-slot and the impulsive pressure is detected by four tiny pressure s ensor elements. The size of a sensor element is 1 mm X 1 mm X 2 mm, an d the four elements are set at 1.7 mm intervals along a line on the to p surface of the pressure sensor. From the experimental results, the f ollowing is revealed. Impulsive pressure caused by microjet impingemen t in the V-slot is several MPa which is almost the same as that near t he plane wall. When a bubble is produced near the bottom of the V-slot , the maximum impulsive pressure is detected at a point 3.4 mm from th e point of microjet impingement, which is somewhat farther than the di stance of 1.7 mm on the plane wall.