Kinetics of Cavitation Bubble in Ultrasonic Degassing of Casting Aluminium Alloy

Miao Liu; Peng Zhai; Qiang Long; Chun Yang Wang; Bo Han Xiao

doi:10.4028/www.scientific.net/MSF.896.175

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HomeMaterials Science ForumMaterials Science Forum Vol. 896Kinetics of Cavitation Bubble in Ultrasonic...

Kinetics of Cavitation Bubble in Ultrasonic Degassing of Casting Aluminium Alloy

Abstract:

Severe regassing was detected by previous experiment on degassing method for aluminium-silicon alloy by injecting argon with rotation. In order to further degas, ultrasonic degassing was adopted. To describe the cavitation bubbles’ movement, traditional Rayleigh-Plesset equation was modified. Classic Rayleigh-Plesset equation is strongly restricted by the applicable condition that the centre of the bubble is fixed. In this paper, a position-related Rayleigh-Plesset equation is proposed to describe the cavitation bubble's floating movement in aluminium-silicon alloy of 750°C with the coefficient of viscosity of 0.0012. As the calculation results, a bubble stimulated by high-low-frequency vibration can float up faster with violent vibration.

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Materials Science Forum (Volume 896)

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175-181

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https://doi.org/10.4028/www.scientific.net/MSF.896.175

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Online since:

March 2017

Authors:

Miao Liu, Peng Zhai*, Qiang Long, Chun Yang Wang, Bo Han Xiao

Keywords:

Cavitation Bubble, Rayleigh-Plesset Equation, Ultrasonic Degassing

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