6533b7d7fe1ef96bd1267a1a
RESEARCH PRODUCT
Quasi-geostrophic jet-like flow with obstructions
Michele MossaDan LiberzonM. Eletta NegrettiJoël SommeriaRoni Hilel GoldshmidDonatella TerminiFrancesca De Seriosubject
010504 meteorology & atmospheric sciences01 natural sciences010305 fluids & plasmasPhysics::Geophysics[SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]AtmosphereMomentumPhysics::Fluid Dynamicsvegetation0103 physical sciencesJetscoastal engineeringCoriolis forcePhysics::Atmospheric and Oceanic Physics0105 earth and related environmental sciencesPhysics[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]Jet (fluid)Turbulence[SDE.IE]Environmental Sciences/Environmental EngineeringJets coastal engineeringMechanical EngineeringJet-like flowMechanicsCondensed Matter PhysicsFlow (mathematics)Mechanics of MaterialsHomogeneousGeostrophic winddescription
International audience; Jet-like flows are ubiquitous in the atmosphere and oceans, and thus a thorough investigation of their behaviour in rotating systems is fundamental. Nevertheless, how they are affected by vegetation or, generally speaking, by obstructions is a crucial aspect which has been poorly investigated up to now. The aim of the present paper is to propose an analytical model developed for jet-like flows in the presence of both obstructions and the Coriolis force. In this investigation the jet-like flow is assumed homogeneous, turbulent and quasi-geostrophic, and with the same density as the surrounding fluid. Laws of momentum deficit, length scales, velocity scales and jet centreline are analytically deduced. These analytical solutions are compared with some experimental data obtained using the Coriolis rotating platform at LEGI-Grenoble (France), showing a good agreement.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 |