Abstract: As a very preponderant microstructure numerical simulation method,the phase field method has been widely used in the research of solidification microstructure evolutionary mechanism.But whether the simulation scale or the evolution time is considered,there is huge computation which sets a high demand for the computer.Compared with the traditional CPU,GPU is much more efficient for the parallel computing.The paper proposed a GPU-based acceleration strategy to complete the directional solidification phase field simulation in large scale.The results show that the computation time can reduce 30 times compared with a single CPU,which brings a new opportunity for the phase field simulation in large scale.

Key words: Phase field,Directional solidification,Graphics processing unit(GPU),Compute unified device architecture(CUDA)