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Article Dans Une Revue Coastal Engineering Année : 2016

Extended mild-slope equation for surface waves interacting with a vertically sheared current

Julien Touboul
Jenna Charland
  • Fonction : Auteur
Vincent Rey
K. Belibassakis
  • Fonction : Auteur

Résumé

Propagation of water waves in coastal zones is mainly affected by the influence of currents and bathymetry variations. Models describing wave propagation in coastal zones are often based on the numerical solution of theMild Slope equation (Kirby, 1984). In this work, an extension of this equation is derived, taking into account the linear variation of the current with depth,which results in a constant horizontal vorticity, slowly varying horizontally, within the background current field. The present approach is based on the asymptotic expansion of the depth-integrated lagrangian, assuming the linear variation of the background currentwith depth. With the aid of selected examples the role of this horizontal vorticity, associated with the assumed background current velocity profile, is then illustrated and emphasized, demonstrating its effect on the propagation of water waves in coastal areas.
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Dates et versions

hal-01409788 , version 1 (06-12-2016)

Identifiants

Citer

Julien Touboul, Jenna Charland, Vincent Rey, K. Belibassakis. Extended mild-slope equation for surface waves interacting with a vertically sheared current. Coastal Engineering, 2016, 116, pp.77-88. ⟨10.1016/j.coastaleng.2016.06.003⟩. ⟨hal-01409788⟩
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