Three-phase numerical modeling for equiaxed solidification of Sn_10 wt.%Pb alloy under forced convection driven by electromagnetic force

Joint 5th International Conference on Advances in Solidification Processes;5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining

土木建筑工程;计算机科学

Wang, T.^1^2 ; Wang, E.^1 ; Delannoy, Y.^2 ; Fautrelle, Y.^2 ; Budenkova, O.^2

Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, China^1

Univ. Grenoble Alpes, CNRS, Grenoble INP, SIMAP, Grenoble

F-38000, France^2

关键词: Alloy solidification;    Electromagnetic forces;    Electromagnetic stirring;    Equiaxed solidification;    Heat transfer and fluid flow;    Macrosegregations;    Momentum equation;    Thermal boundary conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/529/1/012030/pdf
DOI  :  10.1088/1757-899X/529/1/012030

来源: IOP

【 摘 要 】

A three-phase equiaxed solidification model where macroscale heat transfer and fluid flow are coupled with microscale nucleation and dendrite growth, is applied to the simulation of the macrosegregation in binary alloy solidification subjected to the electromagnetic stirring. The investigated experimental solidification case is conducted in a cavity which has a good control of the thermal boundary conditions. The proposed model uses a double time step scheme to accelerate the solution. Electromagnetic force is introduced as a source term into momentum equation in analytical form. To account for the friction from the side walls, a 2D1/2 flow model is applied to a three-dimensional experimental configuration. A comparison between the results of simulation and experimental ones is made.