Numerical modelling of wave current interactions at a local scale

M. J. Teles , A. A. Pires-Silva , M. Benoit (1)

1 LHSV - Laboratoire d'Hydraulique Saint-Venant / Saint-Venant Laboratory for Hydraulics

The present work is focused on the evaluation of wave-current interactions through numerical simulations of combined wave and current flows with the Code_Saturne (Archambeau et al., 2004), an advanced CFD solver based on the RANS (Reynolds Averaged Navier-Stokes) equations. The objectives of this paper are twofold. Firstly, changes in the mean horizontal velocity and the horizontal-velocity amplitude profiles are studied when waves are superposed on currents. The influence of various first and second order turbulence closure models is addressed. The results of the numerical simulations are compared to the experimental data of Klopman (1994) and Umeyama (2005). Secondly, a more detailed study of the shear stresses and the turbulence viscosity vertical profile changes is also pursued when waves and currents interact. This analysis is completed using the data from Umeyama (2005). A relationship between a non-dimensional parameter involving the turbulence viscosity and the Ursell number is subsequently proposed. © 2013 Elsevier Ltd.

Mots clés: Reynolds; Averaged Navier-Stokes; CFD RANS solver; Code_Saturne; Wave-current interaction; Horizontal velocity; Non-dimensional parameters; RANS solver; Turbulence closure models; Wave current interaction; Waves and currents; Computational fluid dynamics; Computer simulation; Turbulence; Viscosity; Navier Stokes equations; amplitude; Navier-Stokes equations; numerical model; Reynolds number; vertical profile

Domaines: Sciences de l'ingénieur [physics]

M. J. Teles, A. A. Pires-Silva, M. Benoit. Numerical modelling of wave current interactions at a local scale. Ocean Modelling, 2013, 68, pp.72-87. ⟨10.1016/j.ocemod.2013.04.006⟩. ⟨hal-00947778⟩