PAFEC VibroAcoustics - Ultrasonic Cleaning

The example below illustrates the action of an ultrasonic cleaning device. A cermic block is attached to a steel plate at the base of the tank containing water. The ceramic is excited by a voltage applied across the electrodes on the upper/lower surfaces. The vibration of the plate radiates acoustic energy into the water. The surface at the top of the tank is defined as free. Cavitation affects the properties of the acoustic medium, and in particular the fluid becomes becomes lossy. The example is a simple plain strain model.

2D Ultrasonic Cleaning Model

Animated pressure contours and structural displacements.
50 KHz

Animated pressure contours and structural displacements.
20 KHz

Note: the structure has been translated vertically for clarity.