Progress on the Development of a Comprehensive Quenching Model

摘要

Computational Fluid Dynamics (CFD) has been increasingly applied to heat treating processes in order to provide better part uniformity and to reduce residual stress and distortion. To date, most simulations of the quenching process have focused on the isothermal, single phase flow in the quench tank due to the complexity of modeling boiling phenomena and the lack of good boiling models for application to industrial scale models.Preliminary development work is presented for a CFD modeling approach that is capable of simulating industrial scale quenching equipment that use quenchants that undergo phase change. The primary focus of the model development effort is centered on modeling the phase change (and associated heat transfer) as a sub grid scale phenomena. Three modeling approaches of various complexity are presented along with comparisons to experimental data. Future directions for the continued advancements of these models are discussed.