Abstract
This paper summarizes the improved computational methodology to predict and simulate the heat transfer characteristics present in immersion quenching processes of cast aluminum parts of internal combustion engines. The numerical model implemented in the commercial Computational Fluid Dynamics (CFD) code AVL FIRE v2013.1 accounts for the phase change within the quenchant (water) due to the heat released from a heated cast part when submerged into the sub-cooled liquid by using an Eulerian multi-fluid modeling approach. Preliminary results of the new variable Leidenfrost temperature model and with additional interfacial forces are presented and compared with measured data. Different solid part orientations were studied on the step-plate test piece with variable thickness segments along its height, where solid temperatures and stresses were analyzed. The temperature gradient predicted by the presented model correlate very well with the provided experimental data at different monitoring points.
