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<p>The article describes a&#xa0;method for calculating surface tension in the TwoPhase code for direct numerical simulation of thermal fluid dynamics for a&#xa0;two-phase compressible medium, including two-component mixtures, taking into account interphase heat and mass transfer and condensed gas or Noble–Abel equation of state for a&#xa0;weakly compressible medium. A&#xa0;six-equation model is used to calculate the two-phase medium. The surface tension is taken into account in the form of additional terms of equations for the components of momentum and total energy, which are calculated using an additional vector parameter equal to the volume fraction gradient of the liquid phase. The results of method verification on the classical problem of a&#xa0;gas bubble at rest in a&#xa0;fluid are presented.</p>

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3D model of fluid surface tension in the TwoPhase code

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • V. V. Chudanov,
  • A. E. Aksenova,
  • A. A. Makarevich,
  • A. A. Leonov

摘要

The article describes a method for calculating surface tension in the TwoPhase code for direct numerical simulation of thermal fluid dynamics for a two-phase compressible medium, including two-component mixtures, taking into account interphase heat and mass transfer and condensed gas or Noble–Abel equation of state for a weakly compressible medium. A six-equation model is used to calculate the two-phase medium. The surface tension is taken into account in the form of additional terms of equations for the components of momentum and total energy, which are calculated using an additional vector parameter equal to the volume fraction gradient of the liquid phase. The results of method verification on the classical problem of a gas bubble at rest in a fluid are presented.