Numerical simulations of jet break-up phenomena for the high pressure die casting process

Valerio Viti, Kazunori Kuwana, Adrian S. Sabau, Mohamed Hassan, Kozo Saito

Research output: Contribution to conferencePaperpeer-review

Abstract

In High Pressure Die Casting a molten metal is injected through a thin gate into the cast cavity. High injection pressures and high gate velocities create atomization phenomena which can negatively affect the final quality of the cast. In order to control atomization process it is essential to understand the atomization patterns and the two-phase flowfield that exist at the gate exit. In the present work, 2D numerical simulations of the flow of molten Magnesium through a high aspect-ratio rectangular gate are performed using a water analogue for an open and closed cavity. The numerical simulations made use of VOF-type (Eulerian) physical models and Lagrangian models. Further, a sub-grid scale model was implemented that, in conjunction with VOF-type equations can efficiently predict the general atomization pattern without the need for high-resolution grids. The numerical results were compared to experimental data for validation.

Original languageEnglish
Pages669-678
Number of pages10
StatePublished - 2006
Event2006 TMS Annual Meeting - San Antonio, TX, United States
Duration: Mar 12 2006Mar 16 2006

Conference

Conference2006 TMS Annual Meeting
Country/TerritoryUnited States
CitySan Antonio, TX
Period03/12/0603/16/06

Keywords

  • Atomization
  • Jet breakup
  • Magnesium casting
  • Modeling
  • Numerical simulations

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