In multiphase simulations, accurately determining the interface between fluids is a significant challenge. This study focuses on the Volume of Fluid (VOF) method, which reconstructs fluid interfaces after solving the equations of motion. The primary goal is to achieve a smooth interface that ensures accurate volume flux approximations in Eulerian simulations while balancing computational efficiency and stability. This work investigates enhancements in the Piecewise Linear Interface Construction (PLIC) method, particularly addressing the computational burden of positioning reconstructed planes within polyhedral cells through efficient volume calculations. The new approach is integrated into OpenFOAM as a new freely available module and tested against benchmark cases to evaluate its performance. Results demonstrate improvements in computational efficiency, offering valuable insights for simulating complex two-phase flows relevant to numerous real world applications.

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Interface Reconstruction on Polyhedral Meshes in OpenFOAM

  • Yacine Tayeb,
  • Donat Weniger,
  • Jannick Wolters,
  • Manuel Torrilhon

摘要

In multiphase simulations, accurately determining the interface between fluids is a significant challenge. This study focuses on the Volume of Fluid (VOF) method, which reconstructs fluid interfaces after solving the equations of motion. The primary goal is to achieve a smooth interface that ensures accurate volume flux approximations in Eulerian simulations while balancing computational efficiency and stability. This work investigates enhancements in the Piecewise Linear Interface Construction (PLIC) method, particularly addressing the computational burden of positioning reconstructed planes within polyhedral cells through efficient volume calculations. The new approach is integrated into OpenFOAM as a new freely available module and tested against benchmark cases to evaluate its performance. Results demonstrate improvements in computational efficiency, offering valuable insights for simulating complex two-phase flows relevant to numerous real world applications.