Introduction Ultrasound is widely applied in the clinical field today, such as ultrasound contrast agent imaging, High Intensity Focused Ultrasound (HIFU), Extracorporeal Lithotripsy, sonodynamic therapy. Some of these have a close relation to the dynamic behavior of micro bubbles and that of a bubble cloud. In an ultrasound imaging, micro bubbles are used as contrast agents. Extracorporeal Foc...

Abstract Cavitation generation methods have been used in multifarious directions because of their diversity, and numerous studies discussions conducted on cavitation methods. This study aims to explore the generating mechanism evolution law volume alternate (VAC). In VAC, liquid water is placed an airtight container with a variable volume. As alternately changes, inside continues cavitate. Then...

Cavitation generation methods have been applied in multifarious directions due to their diversity. And scholars carried out numerous researches and discussions on cavitation methods. The purpose of this study is explore the generating mechanism evolution law volumetric alternate (VAC). In VAC, liquid water placed an airtight container with variable volume. With volume alternately changes, insid...

Measurement of the acoustic power in high-energy ultrasonic devices is complex due to occurrence of the strong cavitation in front of the sonotrode tip. In our research we used three methods for characterization of our new ultrasonic probe for neuroendoscopic procedures. The first method is based on the electromechanical characterization of the device measuring the displacement of the sonotrode...

Corresponding Author: Ling Zhou Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, China Email: [email protected] Abstract: The Filter-Based Model (FBM), which was built into CFX through CFX Expression Language (CEL) and a homogeneous cavitation model were employed to simulate cavitating flow around a 2D Clark-y hydrofoil. The effect of a maximum de...

We review recent work on the use of sonoluminescence (SL) to probe spectroscopically the conditions created during cavitation, both in clouds of collapsing bubbles (multibubble sonoluminescence, (MBSL)) and in single bubble events. The effective MBSL temperature can be controlled by the vapor pressure of the liquid or the thermal conductivity of the dissolved gas over a range from ∼1600 to ∼900...