|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Lattice Boltzmann GPU Solutions for Alloy Microstructure Development and Solute Transport
||Ivars Krastins, Andrew Kao, Koulis Pericleous
|On-Site Speaker (Planned)
Solidification of alloy microstructures is of great importance for material processing dictating macroscopic thermo-physical properties. Studies have highlighted the effect that convective heat and mass transport has on dendrite morphology in both free growth and directional solidification. Modelling solutal hydrodynamics during solidification involves the complex geometry of evolving dendrite structures in 3D. This is a computationally demanding and time-consuming task, increasing with problem size. In this study, the lattice Boltzmann method (LBM) is chosen to describe the fluid dynamics as it can be massively parallelised using GPUs. The LBM is fully coupled to an external 2D and 3D solidification code, which uses the enthalpy method, to describe fluid flow during dendritic growth. The results of dendritic growth in external flow are in good agreement with the data found in the literature. The study shows that the LBM can be used to calculate flows fields much faster than conventional CFD approaches.
||Planned: Supplemental Proceedings volume