This paper presents a recently developed flood propagation model. In order to use GPU acceleration, i) the domain Shallow Water Equations are simplified by linearizing bottom friction and neglecting advection, and ii) an appropriate vectorization method is implemented. The model solves the finite difference scheme for each pixel of large-scale raster maps (i.e. regional or national ones). It was initially tested against a well-known benchmark and was then applied to a coastal flooding event in the Caorle area, Venice, Italy, which occurred in December 2008.
A Model of Coastal Flooding Using Linearized Bottom Friction and its Application to a Case Study in Caorle, Venice Italy
Chiara Favaretto
;Luca Martinelli;Piero Ruol
2019
Abstract
This paper presents a recently developed flood propagation model. In order to use GPU acceleration, i) the domain Shallow Water Equations are simplified by linearizing bottom friction and neglecting advection, and ii) an appropriate vectorization method is implemented. The model solves the finite difference scheme for each pixel of large-scale raster maps (i.e. regional or national ones). It was initially tested against a well-known benchmark and was then applied to a coastal flooding event in the Caorle area, Venice, Italy, which occurred in December 2008.
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