Turbulent fluid flow and heat transfer calculation in mold filling and solidification processes of castings

Based on the time-averaging equations and a modified engineering turbulence model, the mold filling and solidification processes of castings are appro ximately described. The algorithm for the control equations is briefly intr oduced, and some problems and improvement methods for the traditional metho d are also presented. Both calculation and tests proved that, comparing wit h the laminar fluid flow and heat transfer, the simulation results by using the turbulence model are closer to the real mold filling and solidificatio n processes of castings.