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...

Hydropower, a clean and renewable energy resource, has been developed worldwide for the economic development and improvement of people's living standards. It has also been used to improve the stability of the smart power grid. Depending on the water head of hydropower plants, various types of hydraulic turbines such as Francis, Kaplan and Pelton have been designed to maximize efficiency. Franci...

This study investigated the difference in mechanical response of martensitic stainless steel X3CrNiMo13-4/S41500/CA6 NM QT780 between hydrodynamic and acoustic cavitation erosion. The results show that erosion generates small pits at a high temporal frequency on material, while produces larger lower frequency. Acoustic tests have been performed using 20 kHz ultrasonic horn located 500 μm front ...

The oil and gas sector has recently shown an interest in hydrodynamic cavitation for enhancement, as it allows reducing transportation refinement costs. This work presents a fluid-dynamic study of Colombian at different temperatures passing through vortex reactor. First, experimental design was elaborated, establishing the temperature quantity injected hydrogen donor factors final viscosity res...

A scalable manufacturing method for the production of biocompatible fewlayered graphene nanosheets is developed using hydrodynamic cavitation. Scalable exfoliation induced by employing cavitation and a serum albumin protein. Unlike acoustic cavitation, primary means bubble collapse in caused laterally, thereby separating two adjacent flakes through shear effect. In this process, bovine albumin,...

This study aimed to investigate the Cavitation dynamics of Hydrodynamic-acoustic cavitation by employing experimental methods. The spatial distribution clouds, temporal and achieved main flow structure in field were extracted analyzed complying with cavitating image captured high-speed camera. As indicated from results, widened region strength under synergy ultrasound reported. When inlet press...

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...

In this work, we experimentally investigated the cavitation effects on hydrodynamic behavior of a circular cylinder at different cavitating flows. We analyzed dynamics behind using high-speed camera and also measured associated forces load cell. studied around various types regimes such as cloud cavitation, partial inception. addition, three Reynolds numbers: 1 × 105, 1.25 105 1.5 105. The resu...