ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Lattice Boltzmann simulation of liquid–vapor system by incorporating a surface tension term |
Song Bao-Wei (宋保维), Ren Feng (任峰), Hu Hai-Bao (胡海豹), Huang Qiao-Gao (黄桥高) |
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China |
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Abstract In this study, we investigate the pseudopotential multiphase model of lattice Boltzmann method (LBM) and incorporate a surface tension term to implement the particle interaction force. By using the Carnahan-Starling (CS) equation of state (EOS) with a proper critical pressure-density ratio, a density ratio over 160000 is obtained with satisfactory numerical stability. The added surface tension term offers a flexible choice to adjust the surface tension strength. Numerical tests of the Laplace rule are conducted, proving that smaller spurious velocity and better numerical stability can be acquired as the surface tension becomes stronger. Moreover, by wall adhesion and heterogeneous cavitation tests, the surface tension term shows its practical application in dealing with problems in which the surface tension plays an important role.
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Received: 14 May 2014
Revised: 18 August 2014
Accepted manuscript online:
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PACS:
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47.61.Jd
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(Multiphase flows)
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68.03.Cd
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(Surface tension and related phenomena)
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47.55.D-
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(Drops and bubbles)
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47.50.-d
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(Non-Newtonian fluid flows)
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Fund: Project supported by the National Nature Science Foundation of China (Grant No. 51109178) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20116102120009). |
Corresponding Authors:
Song Bao-Wei
E-mail: songbaowei@nwpu.edu.cn
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Cite this article:
Song Bao-Wei (宋保维), Ren Feng (任峰), Hu Hai-Bao (胡海豹), Huang Qiao-Gao (黄桥高) Lattice Boltzmann simulation of liquid–vapor system by incorporating a surface tension term 2015 Chin. Phys. B 24 014703
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