The tensile strength of ordinary water such as tap water or seawater is typically well below 1 bar. It is governed by cavitation nuclei in the water, not by the tensile strength of the water itself, which is extremely high. Different models of the nuclei have been suggested over the years, and experimental investigations of bubbles and cavitation inception have been presented. These results sug...

Introduction: Transient cavitations induced by low frequency irradiation of ultrasound can be used to treat tumors. Previous studies in in-vitro experiments have shown that induced cavitation by dual or multiple frequencies of ultrasound is greater than induced cavitation by single frequency irradiation. In this study, we compared and evaluated the treatment effects of dual frequency irradiatio...

Abstract The transient cavitating flow in the wake of a hydrofoil at zero incidence angle has been simulated using homogeneous mixture cavitation mass transfer model combined with both Reynolds Average Navier-Stokes (RANS) and Scale Resolving Simulation (SRS) turbulence models. geometry corresponds to 2D NACA 0009 truncated trailing edge which already extensively investigated High-Speed Cavitat...

In this article an arbitrary Lagrangian–Eulerian (ALE) formulation for modelling cavitation in elastohydrodynamic lubrication (EHL) is derived and applied to line contact geometry. The method is developed in order to locate the position of cavitation onset along the length of the contacting region which gives the transition from liquid to vapour in the fluid. The ALE is implemented by introduci...

Ultrasonic waves used in liquid alloys can produce refined grain structures, which mainly contributes to ultrasonic cavitation and acoustic streaming. According the bubble lifetime whether they are fragmented into “daughter” bubbles, be divided transient stable cavitation. Compared with cavitation, interaction between bubbles solidifying have been rarely investigated previously . In this work, ...

Nuclear reactor coolant pump as one of the most critical equipment is only rotating in first loop system nuclear power plant. Due to asymmetric structure body, especially existence outlet segment lead a certain radial force, magnitude force directly affects work stability pump. The could under those transient complex conditions an important index its performance. To study cavitation characteris...

Cavitation is an intricate multiphase phenomenon that interplays with turbulence in fluid flows. It exhibits clear duality in characteristics, being both destructive and beneficial in our daily lives and industrial processes. Despite the multitude of occurrences of this phenomenon, highly dynamic and multiphase cavitating flows have not been fundamentally well understood in guiding the effort t...

Abstract Cavitation inside a torque converter induces noise, vibration and even failure, these effects have been disregarded in previous design processes. However, modern applications require attention to this issue because of its high-speed high-capacity requirements. Therefore, study investigated the cavitation effect on using both numerical experimental methods with an emphasis influence cha...

1. Introduction One of the most important recent applications of sonochemistry has been to the synthesis and modification of inorganic materials [1-5]. In liquids irradiated with high intensity ultrasound, acoustic cavitation drives bubble collapse producing intense local heating, high pressures, and very short lifetimes; these transient, localized hot spots drive high energy chemical reactions...