Application of a GPU Based Hydrodynamic Model in Tsunami Simulations

摘要

Tsunamis generated by earthquakes generally propagate as long wavesrnin the deep ocean and develop into sharp-fronted surges moving rapidlyrntowards the coast in shallow water, which may be effectively simulatedrnby hydrodynamic models solving the nonlinear shallow water equationsrn(SWEs). However, most of the existing tsunami models suffer fromrnlong simulation time for large-scale high-resolution real-worldrnapplications. In this work, a graphics processing unit (GPU) acceleratedrnfinite volume shock-capturing hydrodynamic model is presented forrnefficient tsunami simulations. The model is demonstrated tornconsistently save approximately 40 times of computational cost for allrnof the benchmark tests.