Quasi-geostrophic jet-like flow with obstructions
| Autor: | Michele Mossa, Dan Liberzon, M. Eletta Negretti, Joël Sommeria, Roni Hilel Goldshmid, Donatella Termini, Francesca De Serio |
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| Přispěvatelé: | Michele Mossa, Roni H. Goldshmid, Dan Liberzon, M. Eletta Negretti, Joel Sommeria, Donatella Termini, Francesca De Serio, Politecnico di Bari, Consorzio Nazionale Interuniversitario per le Scienze del Mare [Rome, Italie] (CoNISma), Technion - Israel Institute of Technology [Haifa], Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Università degli studi di Palermo - University of Palermo |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
01 natural sciences 010305 fluids & plasmas Physics::Geophysics [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Atmosphere Momentum Physics::Fluid Dynamics vegetation 0103 physical sciences Jets coastal engineering Coriolis force Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences Physics [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Jet (fluid) Turbulence [SDE.IE]Environmental Sciences/Environmental Engineering Jets coastal engineering Mechanical Engineering Jet-like flow Mechanics Condensed Matter Physics Flow (mathematics) Mechanics of Materials Homogeneous Geostrophic wind |
| Zdroj: | Journal of Fluid Mechanics Journal of Fluid Mechanics, Cambridge University Press (CUP), 2021, 921, pp.A12. ⟨10.1017/jfm.2021.501⟩ |
| ISSN: | 0022-1120 1469-7645 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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