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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. 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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  1. Subtask 1.6.2 High Resolution Coastal Modelling APAT Italian Agency for Environmental Protection Francesco Lalli Luca Liberti

  2. The Continuous Depth-Averaged Model * * * Turbulence Modeling:  = 0 + t t = C H uFischer (1973), Nezu (1996)

  3. 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)

  4. SIMPLE-SHAPED CHANNEL HARBOUR

  5. SIMPLE SHAPED CHANNEL HARBOUR: TIME-AVERAGED NUMERICAL SOLUTION

  6. Pescara Harbor (Adriatic Sea, Italy) BREAKWATER JETTY MARINA PESCARA RIVER

  7. BREAKWATER ENVIRONMENTAL EFFECTS Temperature Field

  8. Velocity field (river discharge 30 m3/sec)

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

  10. BAROCLINIC JET: PESCARA HARBOUR MODEL (horizontal scale 1:1000, vertical scale 1:100)

  11. Wave-submerged barrier interaction

  12. Wave-submerged barrier interaction: rip current generation (wave elevation)

  13. Wave-submerged barrier interaction: rip current generation (velocity vectors)

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

  15. Neretva River Mouth: Bathimetry

  16. Neretva river mouth.Grid resolution: 12x12 m

  17. Mala Neretva river mouth.Grid resolution: 12x12 m

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

  19. Snapshot of the flow field: vorticity

  20. Diffusion of river waters

  21. Flow in a simple-shaped channel harbor Numerical Solution Re = UL/ = 100 Numerical Solution Re = UL/ = 300

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