Cavitation damage to membranes is a major barrier for developing an ultrasound (US)-assisted membrane water treatment process. In this study, US was integrated heterogeneous Fenton reactor the of pharmaceutical-containing with aims i) fouling control, ii) enhancement oxidation. order prevent damages due cavitation, stable and violent cavitation regions were identified by quantification analysis...

Ultrasonic cavitation treatment of melt significantly improves the downstream properties and quality of conventional and advanced metallic materials. However, the transfer of this technology has been hindered by difficulties in treating large volumes of liquid metal. To improve the understanding of cavitation processing efficiency, the Full Cavitation Model, which is derived from a reduced form...

One third of the worldwide disease burden – number of years lost due to disease – is caused by brain diseases, such as dementia, Parkinson’s and brain cancer (DiLuca and Olesen 2014). With an aging population, this burden is expected to rise. Despite the global effort to develop new treatments, there are still no effective drugs for these diseases. One of the major reasons for the lack of succe...

This study aims at understanding the characteristics of negative liquid pressures at the nanoscale using molecular dynamics simulation. A nano-meniscus is formed by placing liquid argon on a platinum wall between two nano-channels filled with the same liquid. Evaporation is simulated in the meniscus by increasing the temperature of the platinum wall for two different cases. Non-evaporating film...

This study deals with numerical simulations of the growth bubble nuclei and corresponding cloud formation in a pressure field given by high intensity focused ultrasound (HIFU) backscattered from laser-induced interface. The imposed on is calculated Ghost Fluid Method (GFM). microscopic that cannot be resolved under Eulerian grids GFM evaluated using Keller equation for dynamics. Once grow so la...

one of the most problems that limits use of turbomachines at high speed applications is cavitation. cavitation can damage casing and blades of turbopump, also can make unstability in system. inducer that was installed in front of main impeller can improve cavitation characteristic of system and increase static pressure just before entrance of centrifugal pump. specially in fuel feed system of l...

This paper is concerned with the flow of a bubbly fluid along a wavy wall, which is one Fourier component of a linearized hydrofoil. The bubbles are dispersed, not throughout the whole of the liquid, but only over a certain distance from the wall, as occurs in practice with cavitation bubbles. Outside the bubbly regime there is pure liquid. The interface between the bubbly fluid and pure liquid...

Striking the top of a liquid-filled bottle can shatter the bottom. An intuitive interpretation of this event might label an impulsive force as the culprit in this fracturing phenomenon. However, high-speed photography reveals the formation and collapse of tiny bubbles near the bottom before fracture. This observation indicates that the damaging phenomenon of cavitation is at fault. Cavitation i...