The nucleation of ice by power ultrasound at elevated temperatures (compared to control experiments) has been well documented for the past four decades, however there is a limited understanding of the influence, if any of cavitation bubbles. This work reports high-speed observations of the crystallisation of ice in the presence of acoustic cavitation. The experimental system allowed a small sam...

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...

A challenge in image based metrology and forensics is intrinsic camera calibration when the used unavailable. The unavailability raises two questions. first question how to find projection model that describes camera, second detect incorrect models. In this work, we use off-the-shelf extended PnP-methods from 2D-3D correspondences, propose a method for validation. most common strategy evaluatin...

Abstract With the continuous expansion of application range microelectromechanical systems, microdevice forming technology has achieved remarkable results. However, it is challenging to develop new microforming processes that are low cost, environmentally friendly, and highly flexible; high-energy shock wave in a cavitation bubble’s collapse process used as loading force. Herein, for microbulgi...

Photo acoustic drug delivery is a technique for localized drug delivery by laser-induced hydrodynamic pressure following cavitation bubble expansion and collapse. Photoacoustic drug delivery was investigated on gelatin-based thrombus models with planar and cylindrical geometries by use of one microsecond laser pulses. Solutions of a hydrophobic dye in mineral oil permitted monitoring of deliver...

Creep damage in polycrystalline metallic materials can be attributed to cavitation and cracking along the grain interfaces. Theories of creep cavitation that have been developed in recent years are reviewed. Further evaluation and/or refinement of these theories has been retarded by a lack of an experimental counterpart. Small angle neutron scattering studies (SANS) provide one experimental too...

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...

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...