Abstract
This paper presents investigation of accuracy and promotion of large-scale for the 2D-3D hybrid method based on the arbitrary domain. The Phase-Field Model (PFM) is applied to capture the free surface which is aimed to increase the accuracy for the 2D-3D hybrid method. The MPI method is used as the parallel computing method. Several numerical examples are examined to show the validity and the effectiveness of the presented method. Finally, the present model is applied to simulate the 2011 Tohoku tsunami.