Simulation of a bimetallic alloy cooling process

In this paper we present a 3D Comsol Multiphysics simulation model of a bimetallic Tokat-steel alloy cooling process. The model is using the Turbulent Fluid Flow interface of the CFD module, the Heat Transfer in Fluids and Solids interface of the Heat-Transfer module and the Thermal-Structure interaction interface of the Structural Mechanics module. The phase change in the Tokat and the thermal radiation are considered. The residual stresses are computed with an elastoplastic material model. The level of shrinkage is estimated by the implementation of the Niyama criterion. The simulations allow to track the solid fraction and the solidification front, and to understand the cooling fluid flow distribution around the cooled part. The simulation results with Comsol Multiphysics are compared with experimental measurements of the temperature evolution at some points of the system.