Experimental and Numerical Modeling of Runup Induced by Impulsive Waves

Landslide Tsunamis have been extensively studied during the last years. However, recent events (e.g. last volcanic eruption Anak Krakatau in 2019) motivated the increase of the attention paid to this phenomenon and on its destructive effects. To protect human life, knowledge of maximum expected runup could be of great help for administrators and civil protection. This paper aims at investigating the performances of different numerical models (DualSPHysics, an OpenFOAM solver, and SWASH) to assess the landslide induced runup by comparing the numerical results to experimental findings. Results show good accuracy for all the models in reproducing wave generation, while the wave propagation features are correctly reproduced only for the biggest of the two water depths. The OpenFOAM solver and SPH show good performances in evaluating impulse wave runup compared to experimental results, while SWASH lacks in the accuracy.