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3D computer simulation of melt flow and heat transfer in the lost foam casting process

Mirbagheri, S. M. H ; Sharif University of Technology | 2003

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  1. Type of Document: Article
  2. DOI: 10.1002/nme.797
  3. Publisher: 2003
  4. Abstract:
  5. A new mathematical model has been developed to simulate mould filling in the lost foam casting process, using the finite difference method. The simulation of molten flow and track of free surfaces is based on the SOLA-VOF numerical technique. An algorithm was developed to calculate the gas pressure of the evaporated foam during the mould filling. The effect of backpressure on the filling behaviour was modelled with an experimental function by adding three-dimensions 3DVOF functions. In order to verify the computational results, a thin grey iron plate was poured into a transparent mould. Cavity filling, foam depolymerization and gap formation were recorded with a 16mm high-speed camera. A good agreement was achieved for simulation results of filling sequences with those from experiments. © 2003 John Wiley and Sons, Ltd
  6. Keywords:
  7. ASOLA-VOF technique ; Baffle-screen method ; Donor-acceptor cells ; Free surface simulation ; Lost foam casting process ; Photography technique
  8. Source: International Journal for Numerical Methods in Engineering ; Volume 58, Issue 5 , 2003 , Pages 723-748 ; 00295981 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/nme.797