CFD study on the effect of ultrasound wave frequency on cavitation field inside a liquid

Abstract

The effects of different ultrasonic wave frequencies are studied in this paper. The flow behavior of the liquid in a vessel with ultrasound transducer is numerically investigated using CFD calculations. Liquid imposed a periodic change in pressure at the bottom of the vessel where the ultrasound transducer is installed. In the modeling, the time step is set to quarter period of ultrasound wave. The modeling results show the comparison of the pressure and cavitation fields for different frequencies. Velocity vectors are also used to investigate the mixing of the liquid imposing ultrasound. Finally, the effect of ultrasound on the heat transfer to the liquid is investigated and the results show the improvement of heat transfer in the presence of active ultrasonic transducer.