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  • Physics  (2)
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  • Physics  (2)
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  • 1
    Online Resource
    Online Resource
    NUMERICAL SIMULATION OF ISOTHERMAL AND THERMAL TWO-PHASE FLOWS USING PHASE-FIELD MODELING
    World Scientific Pub Co Pte Ltd ; 2007
    In:  International Journal of Modern Physics C Vol. 18, No. 04 ( 2007-04), p. 536-545
    Details
    In: International Journal of Modern Physics C, World Scientific Pub Co Pte Ltd, Vol. 18, No. 04 ( 2007-04), p. 536-545
    Abstract: For interface-tracking simulation of two-phase flows in various micro-fluidics devices, we examined the applicability of two versions of computational fluid dynamics method, NS-PFM, combining Navier-Stokes equations with phase-field modeling for interface based on the van der Waals-Cahn-Hilliard free-energy theory. Through the numerical simulations, the following major findings were obtained: (1) The first version of NS-PFM gives good predictions of interfacial shapes and motions in an incompressible, isothermal two-phase fluid with high density ratio on solid surface with heterogeneous wettability. (2) The second version successfully captures liquid-vapor motions with heat and mass transfer across interfaces in phase change of a non-ideal fluid around the critical point.
    Type of Medium: Online Resource
    ISSN: 0129-1831 , 1793-6586
    URL: Article
    DOI: 10.1142/S0129183107010772
    RVK:
    UA 4383
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2007
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    Online Resource
  • 2
    Online Resource
    Online Resource
    LATTICE BOLTZMANN SIMULATION OF INTERFACIAL DEFORMATION
    World Scientific Pub Co Pte Ltd ; 2003
    In:  International Journal of Modern Physics B Vol. 17, No. 01n02 ( 2003-01-20), p. 179-182
    Details
    In: International Journal of Modern Physics B, World Scientific Pub Co Pte Ltd, Vol. 17, No. 01n02 ( 2003-01-20), p. 179-182
    Abstract: This study describes the numerical simulations of two-phase interfacial deformations using the binary fluid (BF) model in the lattice Boltzmann method (LBM), where a macroscopic fluid involves mesoscopic particles repeating collisions and propagations and an interface is reproduced in a self-organizing way by repulsive interaction between different kinds of particles. Schemes for the BF model are proposed to simulate motions of immiscible two phases with different mass densities. For higher Reynolds number, the finite difference-based lattice Boltzmann scheme is applied to the kinetic equations of particles, which include convection terms to reduce the diffusivity of each phase volume. In addition, two parameters are introduced into the BF model to adjust surface tension and interfacial thickness independently. The numerical results of three-dimensional bubble motion under gravity and two-dimensional droplet deformation under shear stress indicate that the lattice-Boltzmann BF model with the proposed schemes would be applicable to simulating interfacial dynamics of immiscible two-phase fluids.
    Type of Medium: Online Resource
    ISSN: 0217-9792 , 1793-6578
    URL: Article
    DOI: 10.1142/S0217979203017308
    RVK:
    UA 4381.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2003
    Location Call Number Limitation Availability
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    Online Resource
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