6434

GPU-Accelerated SPH Model for Water Waves and Other Free Surface Flows

Robert Anthony Dalrymple, Alexis Herault, Giuseppe Bilotta, Rozita Jalali Farahani
Department of Civil Engineering, Johns Hopkins University, 3400 No. Charles St., Baltimore, MD 21218
Proceedings of the International Conference on Coastal Engineering, No 32, 2010

@article{dalrymple2010gpu,

   title={GPU-ACCELERATED SPH MODEL FOR WATER WAVES AND OTHER FREE SURFACE FLOWS},

   author={Dalrymple, R.A. and H{‘e}rault, A. and Bilotta, G. and Farahani, R.J.},

   year={2010}

}

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This paper discusses the meshless numerical method Smoothed Particle Hydrodynamics and its application to water waves and nearshore circulation. In particularly we focus on an implementation of the model on the graphics processing unit (GPU) of computers, which permits low-cost supercomputing capabilities for certain types of computational problems. The implementation here runs on Nvidia graphics cards, from off-the-shelf laptops to the top-of-line Tesla cards for workstations with their current 480 massively parallel streaming processors. Here we apply the model to breaking waves and nearshore circulation, demonstrating that SPH can model changes in wave properties due to shoaling, refraction, and diffraction and wave-current interaction; as well as nonlinear phenomena such as harmonic generation, and, by using wave-period averaged quantities, such aspects of nearshore circulation as wave set-up, longshore currents, rip currents, and nearshore circulation gyres.
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