|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Massively Parallel GPU Lattice Boltzmann Method for 3D Alloy Solidification and Solute Transport
||Ivars Krastins, Andrew Kao, Koulis Pericleous
|On-Site Speaker (Planned)
This study presents the implementation of a parallel GPU Lattice Boltzmann Method (LBM), describing the flow of solute during alloy solidification. A purpose-built 3D LBM code is fully coupled to an external solidification solver, and it is run in parallel using a combination of MPI and GPUs. The results demonstrate that LBM can be used successfully to describe fluid flow in complex evolving geometries and that it is more efficient compared to conventional continuum CFD approaches. This is especially true when utilising GPU hardware, where speed-ups of the order of 100x can be achieved. Since solute flow represents the most time-consuming part of the simulation, this LBM approach opens the possibility of component-scale microstructural simulations in a practical timeframe. Results are presented for several benchmark/test cases along with the application of massive parallelisation in the case of freckle formation in a casting.
||Planned: None Selected