Efficient Simulation of Obstructed Dam-break Flows Using the MPS Method on Domestic DCU Accelerator Card
The moving particle semi-implicit method(MPS)has unique advantages due to its Lagrangian characteristics,making it particularly suitable for simulating strong nonlinear problems with large deformation characteristics of free surfaces.However,the high computational cost of neighbor particle searching and solving the Pressure Poisson Equation limits the practicality of this method in large-scale application.Graphics processing unit(GPU)is highly suitable for parallel simulation of similar and numerous problems due to its multi-core framework.In this paper,our in-house GPU accelerated MPS algorithm program MPSGPU-SJTU is migrated to the domestic GPU-like accelerator deep computing unit(DCU)based on the HIP programming environment,and an MPSDCU-SJTU solver is developed.The three-dimensional dam break flow is simulated using MPSDCU-SJTU,and the results are in good agreement with the published results.Further comparison is made between the calculation time before and after DCU acceleration,demonstrating that the MPSDCU-SJTU solver can significantly improve the computational efficiency.
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