Hybrid parallel smooth particle hydrodynamic for probabilistic tsunami risk assessment and inland inundation
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- Hybrid parallel smooth particle hydrodynamic for probabilistic tsunami risk assessment and inland inundation
- Sihombing, Fritz; Torbol, Marco
- Issue Date
- SMART STRUCTURES AND SYSTEMS, v.23, no.2, pp.185 - 194
- The probabilistic tsunami risk assessment of large coastal areas is challenging because the inland propagation of a tsunami wave requires an accurate numerical model that takes into account the interaction between the ground, the infrastructures, and the wave itself. Classic mesh-based methods face many challenges in the propagation of a tsunami wave inland due to their ever-moving boundary conditions. In alternative, mesh-less based methods can be used, but they require too much computational power in the far-field. This study proposes a hybrid approach. A mesh-based method propagates the tsunami wave from the far-field to the near-field, where the influence of the sea floor is negligible, and a mesh-less based method, smooth particle hydrodynamic, propagates the wave onto the coast and inland, and takes into account the wave structure interaction. Nowadays, this can be done because the advent of general purpose GPUs made mesh-less methods computationally affordable. The method is used to simulate the inland propagation of the 2004 Indian Ocean tsunami off the coast of Indonesia.
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