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A GPU-based coupled SPH-DEM method for particle-fluid flow with free surfaces

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Figure

Fig. 1. Boundary treatment used in SPH calculation: boundary particles acting as bothdummy fluid particles and repulsive particles.
Fig. 2. Schematic demonstrating neighbor searching algorithm used in coupled SPH-DEM approach, in which (a) dual-grid system, (b) searching solid neighbors for solid particle in DEMgrid, (c) searching fluid neighbors for fluid particle, (d) searching fluid neighbors for solid particle and (e) searching solid neighbors for fluid particle.
Fig. 3. Flow chart of the algorithm of the coupled SPH-DEM method. The steps in theshaded boxes are conducted on the GPU.
Fig. 4. Particle representation of the dam-break test case. W denotes the width of the watercolumn
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