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Research Papers: Nuclear Power

Numerical Solution on Spherical Vacuum Bubble Collapse Using MPS Method

[+] Author and Article Information
Wen xi Tian1

School of Nuclear Science and Technology, Xi’an Jiaotong University, Shaanxi 710049, China; Department of Nuclear Engineering and Management, University of Tokyo, Tokyo 113-8586, Japan

Sui-zheng Qiu, Guang-hui Su

School of Nuclear Science and Technology, Xi’an Jiaotong University, Shaanxi 710049, China

Yuki Ishiwatari, Yoshiaki Oka

Department of Nuclear Engineering and Management, University of Tokyo, Tokyo 113-8586, Japan

1

Corresponding author.

J. Eng. Gas Turbines Power 132(10), 102920 (Jul 09, 2010) (5 pages) doi:10.1115/1.4001058 History: Received August 12, 2009; Revised August 14, 2009; Published July 09, 2010; Online July 09, 2010

Single vacuum bubble collapse in subcooled water has been simulated using the moving particle semi-implicit (MPS) method in the present study. The liquid is described using moving particles, and the bubble-liquid interface was set to be the vacuum pressure boundary without interfacial heat mass transfer. The topological shape of the vacuum bubble is determined according to the location of interfacial particles. The time dependent bubble diameter, interfacial velocity, and bubble collapse time were obtained within a wide parametric range. Comparison with Rayleigh’s prediction indicates a good consistency, which validates the applicability and accuracy of the MPS method. The potential void-induced water hammer pressure pulse was also evaluated, which is instructive for the cavitation erosion study. The present paper discovers fundamental characteristics of vacuum bubble hydrodynamics, and it is also instructive for further applications of the MPS method to complicated bubble dynamics.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Schematic diagram of particle effective radius

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Figure 2

Computational domain and boundary condition

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Figure 3

Calculation procedure

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Figure 4

Bubble shape evolution in vacuum bubble collapse: (a) Do=100 mm, PL=5.0 atm; (b) Do=10 mm, PL=5.0 atm

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Figure 5

Vacuum bubble collapse behaviors with different initial bubble size: (a) bubble size history and (b) interface velocity

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Figure 6

Vacuum bubble collapse behaviors with different ambient liquid pressure: (a) bubble size history and (b) interfacial velocity

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Figure 7

Comparison on vacuum bubble collapse time with Rayleigh’s equation: (a) under different initial bubble size condition; (b) under different ambient pressure condition

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