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Francesco Lalli Luca Liberti Subtask 1.6.2 High Resolution Coastal Modelling APAT Italian Agency for Environmental Protection
The Continuous Depth-Averaged Model * * * Turbulence Modeling: = 0 + t t = C H u Fischer (1973), Nezu (1996)
The Discrete Model Primitive Equations § Finite Difference (Le and Moin, 1991) Þ staggered grid Þ time marching: 3 rd order Runge-Kutta Þ spatial derivatives: explicit 2 nd order centered schemes convective terms: SMART scheme (Gaskell & Lau, 1988) § Complex Geometries: boundary body forces approach (Fadlun et al, 2000)
SIMPLE-SHAPED CHANNEL HARBOUR
SIMPLE SHAPED CHANNEL HARBOUR: TIME-AVERAGED NUMERICAL SOLUTION
Pescara Harbor (Adriatic Sea, Italy) BREAKWATER JETTY MARINA PESCARA RIVER
BREAKWATER ENVIRONMENTAL EFFECTS Temperature Field
Velocity field (river discharge 30 m 3 /sec)
BAROTROPIC JET: PESCARA HARBOUR MODEL (horizontal scale 1:1000, vertical scale 1:100)
BAROCLINIC JET: PESCARA HARBOUR MODEL (horizontal scale 1:1000, vertical scale 1:100)
Wave-submerged barrier interaction
Wave-submerged barrier interaction: rip current generation (wave elevation)
Wave-submerged barrier interaction: rip current generation (velocity vectors)
Wave-submerged barrier interaction: rip current generation (vorticity)
Neretva River Mouth: Bathimetry
Neretva river mouth. Grid resolution: 12x12 m
Mala Neretva river mouth. Grid resolution: 12x12 m
Snapshot of the flow field: velocity vectors. Mala Neretva flow rate=72 m 3 /sec Neretva flow rate=156 m 3 /sec
Snapshot of the flow field: vorticity
Diffusion of river waters
Flow in a simple-shaped channel harbor Numerical Solution Re = UL/ = 100 Numerical Solution Re = UL/ = 300
Parametrization of surface fluxes: Outline
Parameterization of orographic related momentum
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