|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Prediction of Air Entrapment in High Pressure Die Casting Applications
||Juergen Jakumeit, Herfried Behnken, Julian Gaenz, Frank Schmidt
|On-Site Speaker (Planned)
Prediction of air entrapment during High Pressure Die Casting (HPDC) can obstruct post processing. Prediction by simulation is challenging, because flow and solidification must be calculated in a strongly coupled manner for the chaotic and complex filling process. Effects of surface tension, wetting angle and reduced melt flow due to the solidification must be modelled with high precision.
To accomplish these requirements a finite-volume method with arbitrary
polyhedral control volumes is used to solve flow and solidification
strongly coupled. The Volume-of-Fluid approach is used to capture the phase
separation between gas, melt and solid in connection with a High-Resolution
Interface-Capturing scheme to gain sharp interfaces between phases.
This methodology was validated against HPDC trials of a test geometry. The influence of process parameters on air entrapment was analyzed and a good agreement between simulation and experimental found. The methodology could be successfully applied to a complex industrial application.
||Planned: None Selected