Subtask 1.6.2 High Resolution Coastal Modelling
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Subtask 1.6.2 High Resolution Coastal Modelling. APAT Italian Agency for Environmental Protection. Francesco Lalli Luca Liberti. The Continuous Depth-Averaged Model * * * Turbulence Modeling:  =  0 +  t  t = C H u  Fischer (1973), Nezu (1996). The Discrete Model

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Francesco Lalli Luca Liberti

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Francesco lalli luca liberti

Subtask 1.6.2 High Resolution Coastal Modelling

APAT

Italian Agency for Environmental Protection

Francesco Lalli

Luca Liberti


Francesco lalli luca liberti

The Continuous Depth-Averaged Model

*

*

*

Turbulence Modeling:  = 0 + t

t = C H uFischer (1973), Nezu (1996)


Francesco lalli luca liberti

  • The Discrete Model

  • § Primitive Equations

  • §    Finite Difference (Le and Moin, 1991)

  • Þ        staggered grid

  • Þ          time marching: 3rd order Runge-Kutta

  • Þ          spatial derivatives: explicit 2nd order centered schemes

  • convective terms: SMART scheme (Gaskell & Lau, 1988)

  • §  Complex Geometries: boundary body forces approach (Fadlun et al, 2000)


Francesco lalli luca liberti

SIMPLE-SHAPED CHANNEL HARBOUR


Francesco lalli luca liberti

SIMPLE SHAPED CHANNEL HARBOUR:

TIME-AVERAGED NUMERICAL SOLUTION


Pescara harbor adriatic sea italy

Pescara Harbor (Adriatic Sea, Italy)

BREAKWATER

JETTY

MARINA

PESCARA RIVER


Francesco lalli luca liberti

BREAKWATER ENVIRONMENTAL EFFECTS

Temperature Field


Francesco lalli luca liberti

Velocity field (river discharge 30 m3/sec)


Barotropic jet pescara harbour model horizontal scale 1 1000 vertical scale 1 100

BAROTROPIC JET: PESCARA HARBOUR MODEL (horizontal scale 1:1000, vertical scale 1:100)


Francesco lalli luca liberti

BAROCLINIC JET: PESCARA HARBOUR MODEL

(horizontal scale 1:1000, vertical scale 1:100)


Wave submerged barrier interaction

Wave-submerged barrier interaction


Wave submerged barrier interaction rip current generation wave elevation

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 (velocity vectors)


Wave submerged barrier interaction rip current generation vorticity

Wave-submerged barrier interaction: rip current generation (vorticity)


Neretva river mouth bathimetry

Neretva River Mouth: Bathimetry


Neretva river mouth grid resolution 12x12 m

Neretva river mouth.Grid resolution: 12x12 m


Mala neretva river mouth grid resolution 12x12 m

Mala Neretva river mouth.Grid resolution: 12x12 m


Francesco lalli luca liberti

Snapshot of the flow field: velocity vectors. Mala Neretva flow rate=72 m3/sec Neretva flow rate=156 m3/sec


Snapshot of the flow field vorticity

Snapshot of the flow field: vorticity


Diffusion of river waters

Diffusion of river waters


Francesco lalli luca liberti

Flow in a simple-shaped channel harbor

Numerical Solution

Re = UL/ = 100

Numerical Solution

Re = UL/ = 300


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