Interfacial Mixing by Horizontal Vortices and Shear Turbulence
| Autor: | E. H. Hopfinger, Jan-Bert Flór, E. Guyez |
|---|---|
| Přispěvatelé: | Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Fitt A., Norbury J., Ockendon H., Wilson E. |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Entrainment (hydrodynamics)
Physics Richardson number K-epsilon turbulence model Turbulence Taylor–Couette flow Wind stress Mechanics 01 natural sciences 010305 fluids & plasmas Vortex Physics::Fluid Dynamics 13. Climate action Condensed Matter::Superconductivity 0103 physical sciences [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 010306 general physics Physics::Atmospheric and Oceanic Physics Langmuir circulation |
| Zdroj: | Progress in Industrial Mathematics Fitt A.; Norbury J.; Ockendon H.; Wilson E. Progress in Industrial Mathematics, 2008, ⟨10.1007/978-3-642-12110-4_41⟩ Progress in Industrial Mathematics at ECMI 2008 ISBN: 9783642121098 |
| Popis: | International audience; In this paper the entrainment rates of shear flows and turbulent Taylor vortices are considered in the light of the mixed-layer deepening in oceans, seas and lakes. The entrainment by Taylor vortices can be considered to represent a model for entrainment by continuously driven horizontal vortices such as Langmuir circulation. When the forcing is related to the surface wind stress, the interfacial entrainment by Langmuir vortices can be estimated from the experimental results on turbulent Taylor vortices, and compared with the entrainment rates in pure shear-flows. The results indicate that mixing by Langmuir vortices is important for all Richardson numbers, Ri ∗ (based on wind-induced surface stress velocity), and that for Ri ∗ > 80 Langmuir vortices dominate the mixed-layer deepening. |
| Databáze: | OpenAIRE |
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