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About this Abstract
Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Algorithm Development in Materials Science and Engineering
Presentation Title L-9: Numerical Simulation for Microstructural Evolution in Solidification Process using CFD-CA (Cellular Automata) Coupled Method
Author(s) Wonjoo Lee, Yuhyeong Jeong, Chanhee Won, Jae-Wook Lee, Howon Lee, Seong-hoon Kang, Jonghun Yoon
On-Site Speaker (Planned) Wonjoo Lee
Abstract Scope In the current study, a two-dimensional (2D) CFD-CA model is considered to simulate the microstructural evolution of alloys in fluid flow during directional solidification process. Based on the local equilibrium theory and algorithms of Lattice Boltzmann Method (LBM) and Cellular Automata (CA), the numerical simulation for microstructural evolution is constructed. The LBM is adopted to numerically solve the fluid flow and solute transport by convection and diffusion. Then, the CA determines the dendrites morphology with the composition field previously calculated by LBM. The results demonstrate asymmetrical dendritic growth influenced by convection and dendrite arm spacing related with the mechanical properties of solidified materials. Also, the results were compared with analytical solution and experimental results of microstructure observation.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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