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Numerical simulation of liquid/gas phase flow during mold filling

Tavakoli, R ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cma.2006.06.001
  3. Publisher: 2006
  4. Abstract:
  5. A numerical model for simulation of liquid/gas phase flow during mold filling is presented. The incompressible Navier-Stokes equations are discretized on a fixed Cartesian mesh with finite difference method. The fractional-step scheme is employed for enforcing incompressibility constraint. The free surface effects are calculated using the volume of fluid method based on the piecewise-linear interface reconstruction and split Lagrangian advection of volume fraction field. Adding limited compressibility to the gas phase led to improvement in convergence rate of Poisson equation solver (about 2-fold). This new concept permits simulation of two-phase incompressible free surface flow during mold filling, without using outflow boundary condition. Numerical results are presented for several test cases, which demonstrate validity, capability and performance of the proposed method in contrast with the traditional (fully incompressible) approach. © 2006 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Entrapped gas ; Free surface flow ; Gas bubble tracking ; Mold filling simulation ; Boundary conditions ; Bubbles (in fluids) ; Computer simulation ; Convergence of numerical methods ; Finite difference method ; Incompressible flow ; Navier Stokes equations ; Two phase flow ; Volume fraction
  8. Source: Computer Methods in Applied Mechanics and Engineering ; Volume 196, Issue 1-3 , 2006 , Pages 697-713 ; 00457825 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0045782506001903?via%3Dihub