Evolution characteristics of cavitation bubble size in liquid steel under power ultrasound

Wang Shun; Chen Min; Guo Qing; Cheng Weihao

doi:10.7513/j.issn.1004-7638.2023.05.019

Volume 44 Issue 5

Oct. 2023

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Wang Shun, Chen Min, Guo Qing, Cheng Weihao. Evolution characteristics of cavitation bubble size in liquid steel under power ultrasound[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 122-129. doi: 10.7513/j.issn.1004-7638.2023.05.019

Citation:

Wang Shun, Chen Min, Guo Qing, Cheng Weihao. Evolution characteristics of cavitation bubble size in liquid steel under power ultrasound[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 122-129. doi: 10.7513/j.issn.1004-7638.2023.05.019

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Evolution characteristics of cavitation bubble size in liquid steel under power ultrasound

doi: 10.7513/j.issn.1004-7638.2023.05.019

School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China

Received Date: 2023-01-15
Available Online: 2023-11-04
Publish Date: 2023-10-31

Abstract

Abstract

The effects of sound pressure amplitude, frequency, initial equilibrium radius of the cavitation bubble and gas multiplicity index on the cavitation bubble size in the liquid steel were investigated by solving the function of the power ultrasonic action period T and the cavitation bubble radius R using the Fourth-Order Runge Kutta method by Matlab software. The results showed that steady-state cavitation occurred in the range of 1~2P₀, and the peak radius of cavitation bubble increased with the increase in the frequency and initial equilibrium radius. The initial equilibrium radius increased from 5 μm to 50 μm, and the cavitation bubble peak radius was increased by 0.35 μm and 90.75 μm, respectively. The peak radius of the cavitation bubble was increased by only 0.84 μm when the frequency increased from 20 kHz to 80 kHz. The transient cavitation occurred in the range of 3~100P₀. The peak radius of the cavitation bubble increased from 423.01 μm to 896.12 μm when the initial equilibrium radius was increased from 5 μm to 20 μm, while the peak radius of the cavitation bubble decreased to 544.16 μm when the initial equilibrium radius was increased to 50 μm. The cavitation bubble underwent two expansion and contraction processes before collapsing with a peak cavitation bubble radius of 488.05 μm at a frequency of 20 kHz. The gas multiplicity index had a little influence on the cavitation effect under the steady-state and transient cavitation conditions. The cavitation bubble peak radius was only decreased by 1.6 μm and 0.35 μm, respectively, when the gas multiplicity index increased from 1 to 1.65.
- liquid steel,
- secondary refining,
- power ultrasound,
- cavitation bubble radius,
- fourth-order Runge Kutta method

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References(11)

References

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