Acoustic streaming produced by High Intensity Focused Ultrasound transducer in a cylindrical case
1ایران، تهران، دانشگاه صنعتی شریف، دانشکده مهندسی مکانیک
2دانشکده مهندسی مکانیک،دانشگاه صنعتی شریف، تهران ایران
3دانشکده مکانیک،دانشگاه صنعتی شریف،تهران، ایران
Acoustic streaming is a steady state fluid flow that is generated by acoustic waves in a liquid. Recent studies have been shown that acoustic streaming can be used as a mechanism for drug delivery into the microstructure of human tissue. In this study acoustic streaming produced by a High Intensity Focused Ultrasound (HIFU) transducer in a cylindrical case is simulated. A geometrically curved piezoelectric is examined to predict the fluid flow generated by acoustic waves and then a k-epsilon turbulent model was used to predict the acoustic streaming field. Acoustic pressure and streaming velocity are reported, Results indicate that acoustic intensity at the focal region is 78.7(W/m^2) and acoustic streaming peak velocity can be reach up to 6(cm/s) which these values are well-compatible with experimental findings and as a consequence this phenomena can be implemented as a mechanism for therapeutic applications, improvement of heat dissipation in micro-devices, and grain morphology adjustments in metal processing industry.