Abstract
Smoothed particle hydrodynamics (SPH), a Lagrangian mesh-free particle numerical method, is suitable for simulating strong impact and large deformation problems. In the method, quantities of particles can ensure high precision. However, with the increase of the particle numbers, the calculation efficiency becomes a challenge for applying the method to the engineering practice. OpenMP, a Portable Shared Memory Parallel Programming, is a great solution to improve the efficiency of SPH algorithm. In the paper, dam-break flow is simulated by SPH method. Vortex centre is discovered, the role of numerical technique is compared. At the same time, two parallel schemes for SPH algorithm is introduced, the speedup ratio with respect to number of particles or threads are revealed.
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