Search results for "shallow waters"

showing 3 items of 13 documents

Simulation of the Propagation of Tsunamis in Coastal Regions by a Two-Dimensional Non-Hydrostatic Shallow Water Solver

2017

Due to the enormous damages and losses of human lives in the inundated regions, the simulation of the propagation of tsunamis in coastal areas has received an increasing interest of the researchers. We present a 2D depth-integrated, non- hydrostatic shallow waters solver to simulate the propagation of tsunamis, solitary waves and surges in coastal regions. We write the governing continuity and momentum equations in conservative form and discretize the domain with unstructured triangular Generalized Delaunay meshes. We apply a fractional- time-step procedure, where two problems (steps) are consecutively solved. In the first and in the second step, we hypothesize a hydrostatic and a non-hydro…

TurbulenceVoronoi cellShallow waters; Non-hydrostatic pressure; Unstructured mesh; Wetting/drying; Tsunami propagation; Long waves; Voronoi cells; Runge-Kutta method; Galerkin scheme; Manning equation; Dirichlet condition; OpenFOAMShallow waterLong waveUnstructured meshGeophysicsSolverTsunami propagationSettore ICAR/01 - IdraulicaThermal hydraulicsWetting/dryingWaves and shallow waterBoundary layerNon-hydrostatic pressureDirichlet conditionFluid dynamicsRunge-Kutta methodOpenFOAMMagnetohydrodynamicsNavier–Stokes equationsGalerkin schemeGeologyManning equation
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Fast solution of diffusive shallow water equations for real time flood prediction

2010

real time control shallow waters diffusive model
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Inserimento di restringimenti e ponti in un modello diffusivo 2D di acque basse

2010

Gli effetti su una corrente, causati dalle pile di un ponte, o più in generale da strutture che riducono la sezione trasversale dell’alveo, risultano di particolare interesse per le variazioni idrometriche che comportano alla corrente stessa. Nonostante i numerosi studi teorici e sperimentali di letteratura, l’attuale modellistica numerica diffusiva non integra la presenza di tali manufatti nelle proprie tecniche risolutive. Nella presente memoria viene presentata la metodologia implementata nel modello diffusivo bidimensionale FLOW2D per la valutazione del rigurgito provocato da restringimenti della sezione trasversale, nonché dalla presenza delle campate. I profili di rigurgito ottenuti c…

shallow waters numerical methods diffusive model unstructured meshes backwater effectSettore ICAR/01 - Idraulica
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