Results 221 to 230 of about 28,654 (256)
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2021
The lift of the hydrofoil subjected to a developed travelling bubble cavitation tends to decrease at constant a provided the number of vapour bubbles and consequently the concentration of active nuclei increases. Irrespective of the state of the boundary layer, inception of cavitation depends essentially on the minimum pressure on the profile and the ...
Yves Lecoffre, M.M. Oberai, V.H. Arakeri
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The lift of the hydrofoil subjected to a developed travelling bubble cavitation tends to decrease at constant a provided the number of vapour bubbles and consequently the concentration of active nuclei increases. Irrespective of the state of the boundary layer, inception of cavitation depends essentially on the minimum pressure on the profile and the ...
Yves Lecoffre, M.M. Oberai, V.H. Arakeri
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Particulate Projectiles Driven by Cavitation Bubbles
Physical Review Letters, 2022The removal of surface-attached particles with cavitation bubbles is usually attributed to the jetting or shear stresses when bubbles collapse. In this Letter, we report an unexpected phenomenon that millimeter-sized spherical particles made of heavy metals (e.g., stainless steel), when initially resting on a fixed rigid substrate, are suddenly ...
Zibo Ren +3 more
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On the pressure of cavitation bubbles
Experimental Thermal and Fluid Science, 2008Abstract Shock wave emission upon the collapse of a cavitation bubble attached to a rigid wall is investigated using high-speed photography with 200 million frames/s and 5 ns exposure time. At a distance of 68 μm from the bubble wall, the shock pressure is 1.3 ± 0.3 GPa.
E.A. Brujan, T. Ikeda, Y. Matsumoto
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AIChE Journal, 2008
AbstractGenerating hydrodynamic/ acoustic cavitation (Gogate et al.) for a useful purpose encompasses the following energy transformation steps: (1) Burning fuel in boiler. (2) Expanding the steam in a turbine generator. (3) Using electrical output from the generator to: (a) Pump water through a mechanical constriction (hydrodynamic cavitation), or (b)
A. V. Mahulkar +3 more
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AbstractGenerating hydrodynamic/ acoustic cavitation (Gogate et al.) for a useful purpose encompasses the following energy transformation steps: (1) Burning fuel in boiler. (2) Expanding the steam in a turbine generator. (3) Using electrical output from the generator to: (a) Pump water through a mechanical constriction (hydrodynamic cavitation), or (b)
A. V. Mahulkar +3 more
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Nonlinear bubble dynamics of cavitation
The Journal of the Acoustical Society of America, 2012A theoretical framework for studying cavitation dynamics is revived. It consists of a nonlinear sound wave equation in an acoustic cavitation environment together with the bubble motion equation. The nonlinear sound wave equation considers time delayed bubble-bubble interaction.
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Bubble Dynamics and Cavitation
Annual Review of Fluid Mechanics, 1977The first analysis of a problem in cavitation and bubble dynamics was made by Rayleigh (1917), who solved the problem of the collapse of an empty cavity in a large mass of liquid. Rayleigh also considered in this same paper the problem of a gas-filled cavity under the assumption that the gas undergoes isothermal com pression.
Plesset, Milton S., Prosperetti, Andrea
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On bubble cavitation and dissolution
International Journal of Heat and Mass Transfer, 1983Equilibrium equations of a bubble-droplet system are derived. The stability of a bubble-droplet system is examined and it is shown that the system possesses not only a dissolution limit, known previously, but also a cavitation limit. The results support that of thermodynamic analysis which demonstrated that both limits exists for a system without a ...
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Effect of an air bubble on the collapse shock wave of a cavitation bubble
Ocean EngineeringZhenhua Li
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Ultrasound, cavitation bubbles and their interaction with cells
Advanced Drug Delivery Reviews, 2008This article reviews the basic physics of ultrasound generation, acoustic field, and both inertial and non-inertial acoustic cavitation in the context of localized gene and drug delivery as well as non-linear oscillation of an encapsulated microbubble and its associated microstreaming and radiation force generated by ultrasound.
Junru, Wu, Wesley L, Nyborg
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1999
The basic problem in understanding bubble dynamics during the cavitation process is determining the pressure and velocity fields in the two-fluid medium along with the motion of the bubble wall under the influence of time-dependent (hydrodynamic, acoustic, or optical) pressure.
Y. T. Shah, A. B. Pandit, V. S. Moholkar
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The basic problem in understanding bubble dynamics during the cavitation process is determining the pressure and velocity fields in the two-fluid medium along with the motion of the bubble wall under the influence of time-dependent (hydrodynamic, acoustic, or optical) pressure.
Y. T. Shah, A. B. Pandit, V. S. Moholkar
openaire +1 more source