In this paper a new numerical model for the simulation of the wave breaking is proposed. In order to represent the complex geometry of coastal regions, the three-dimensional equations of motion are expressed in integral contravariant form and are solved on a curvilinear boundary conforming grid. A time-dependent transformation of the vertical coordinate that is a function of the oscillation of the turbulent wave boundary layer is proposed. New boundary condition bottom for the equations of motion expressed in contravariant form are proposed. In order to correctly simulate the height of the breaking waves, the importance of the correct positioning, inside the oscillating turbulent boundary layer, of the centre of the calculation grid cell closest to the bottom, is demonstrated.

Boundary Condition in the Oscillating Turbulent Boundary Layer for the Simulation of Wave Breaking / Iele, B.; Palleschi, F.. - (2020), pp. 115-121. ((Intervento presentato al convegno 6th International Conference on Computer and Technology Applications, ICCTA 2020; Antalya; Turkey; 14 April 2020 through 16 April 2020; tenutosi a Antalya, Turkey [10.1145/3397125.3397131].

Boundary Condition in the Oscillating Turbulent Boundary Layer for the Simulation of Wave Breaking

Iele B.
Primo
Conceptualization
;
Palleschi F.
Ultimo
Conceptualization
2020

Abstract

In this paper a new numerical model for the simulation of the wave breaking is proposed. In order to represent the complex geometry of coastal regions, the three-dimensional equations of motion are expressed in integral contravariant form and are solved on a curvilinear boundary conforming grid. A time-dependent transformation of the vertical coordinate that is a function of the oscillation of the turbulent wave boundary layer is proposed. New boundary condition bottom for the equations of motion expressed in contravariant form are proposed. In order to correctly simulate the height of the breaking waves, the importance of the correct positioning, inside the oscillating turbulent boundary layer, of the centre of the calculation grid cell closest to the bottom, is demonstrated.
6th International Conference on Computer and Technology Applications, ICCTA 2020; Antalya; Turkey; 14 April 2020 through 16 April 2020;
boundary conditions; integral contravariant form; moving grids in boundary layer; three-dimensional model; time-dependent curvilinear coordinate system; wave breaking
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Boundary Condition in the Oscillating Turbulent Boundary Layer for the Simulation of Wave Breaking / Iele, B.; Palleschi, F.. - (2020), pp. 115-121. ((Intervento presentato al convegno 6th International Conference on Computer and Technology Applications, ICCTA 2020; Antalya; Turkey; 14 April 2020 through 16 April 2020; tenutosi a Antalya, Turkey [10.1145/3397125.3397131].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1420450
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