Zobrazeno 1 - 10 of 2 913 pro vyhledávání: '"TOURBILLON"'
1
Structures quasi-périodiques pour des modèles de transport non-linéaires issus de la mécanique des fluides
Autor: Roulley, Emeric
Publikováno v: Mathematical Physics [math-ph]. Université Rennes 1, 2022. English. ⟨NNT : 2022REN1S074⟩
We study the existence of time quasi-periodic vortex patches for Euler and quasi-geostrophic shallow-water (QGSW) equations which are bidimensional nonlinear and nonlocal transport-type fluid models. Vortex patches are weak solutions in the Yudovich
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2755::bd6ca6acb5a0b70e92a499420926eecb
https://theses.hal.science/tel-04003570/file/ROULLEY_Emeric.pdf
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2
Caractérisation du Front Nord-Baléares : variabilité et rôle de la circulation des masses d’eau en Méditerranée Occidentale
Autor: Barral, Quentin-boris
In the Western Mediterranean, the Balearic front (BF) marks the confrontation of less salty Atlantic waters (AWs) and more salty Mediterranean waters (mAWs) ; the Liguro-Provençal front results from the transport of warm Tyrrhenian waters in the Nor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_________7::c1becc7e8a67f1185eb6d531cd2942ab
https://archimer.ifremer.fr/doc/00807/91922/
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3
Caractéristiques des tourbillons de mésoéchelle dans l'océan Atlantique tropical et leurs interactions avec l'atmosphère
Autor: Aguedjou, Habib
Publikováno v: Sciences de la Terre. Université Paul Sabatier-Toulouse III; Université d'Abomey-Calavi (Bénin), 2022. Français. ⟨NNT : 2022TOU30045⟩
This thesis is based on mesoscale dynamics in the tropical Atlantic Ocean (TAO), and involved physical processes. From the analysis of satellite and in situ data, it aims to study i) eddy characteristics and their seasonal variation, ii) eddy vertica
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2191::70ba8ac17c0bc3534566887a42377dbb
https://theses.hal.science/tel-03729325/document
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4
Numerical investigation of the unsteady distortion for an Sduct intake with mechanical vortex generators
Autor: Geoffrey Tanguy, David G. MacManus, Eric Garnier
Publikováno v: International Journal of Heat and Fluid Flow
International Journal of Heat and Fluid Flow, 2022, 95, pp.108975. ⟨10.1016/j.ijheatfluidflow.2022.108975⟩
International Journal of Heat and Fluid Flow, Elsevier, 2022, 95, pp.108975. ⟨10.1016/j.ijheatfluidflow.2022.108975⟩
International audience; Flow control devices are used within complex intakes to reduce the flow distortion which can adversely impact the stability and performance of embedded engines. There is a need to assess the capability of modern computational
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59796b0a3914480cf7afd3679476a699
https://hal.science/hal-03714576
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5
Effect of the Axial Compressor Tip Clearance Size: Performance and Transition to Rotating Stall
Autor: Clémence Rannou, Antoine Dazin, Julien Marty, Geoffrey Tanguy, Lionel Castillon, Joseph Moubogha
Publikováno v: Conference: ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition
ASME TurboExpo 2022
ASME TurboExpo 2022, Jun 2022, Rotterdam, Netherlands
Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics
International audience; The leakage flow in the gap between the rotor and the casing of an axial compressor is very complex. It is inducing losses and is at the origin of the arising of rotating stall. In addition, the tip clearance can increase with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a73c5f07041636dec3d67d84a8eda8f6
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6
Sources de bruit aérodynamique liées à l'écoulement de jeu en tête de pale de soufflante de turboréacteur à double flux
Autor: Lamidel, David
The fan stage of turbofan engines is actually responsible for a major part of the noise radiated by an aircraft, whether tonal or broadband, at both approach and take-off operating points. Moreover, the fan noise contribution on future Ultra-High By-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::f51ea8166f39ea7a112d10a04561cacd
https://theses.hal.science/tel-03711391
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7
Phenomenological study of dynamic stall on a helicopter rotor at forward flight
Autor: Castells, Camille
Publikováno v: Sciences de l'ingénieur [physics]. SORBONNE UNIVERSITE, 2020. Français
Mécanique des fluides [physics.class-ph]. Sorbonne Université, 2020. Français. ⟨NNT : 2020SORUS284⟩
Dynamic stall occurs on helicopter rotors at high-thrust or high-speed forward flight. It induces large dynamic loads variations and vibrations, limiting the flight envelope. The objective of the present work is to use fluid/structure coupling comput
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::bbfa278a1cae54ca7a3eb59b13ecf105
https://hal.archives-ouvertes.fr/tel-03171652/file/DAAA21023.1615366461.pdf
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8
Experimental analysis and modeling of the losses in the tip leakage flow of an isolated, non-rotating blade setup
Autor: Antoine Dazin, Camille Fournis, Vincent Brion, Benjamin Deveaux, Julien Marty
Publikováno v: Experiments in Fluids
Experiments in Fluids, Springer Verlag (Germany), 2020, 61 (126), pp.1-23. ⟨10.1007/s00348-020-02957-z⟩
Experiments in Fluids, 2020, 61 (126), pp.1-23. ⟨10.1007/s00348-020-02957-z⟩
International audience; Experimental analysis and modelling of the losses in the tip leakage flow of an isolated, non-rotating blade setup B. Deveaux · C. Fournis · V. Brion · J. Marty · A. Dazin Abstract Improving pressure rise capabilities of a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a1b88a41083bb695afc7c2c9709b541
https://doi.org/10.1007/s00348-020-02957-z
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9
Simulation de l'interaction jet/tourbillon dans le sillage d'un avion et son impact sur la formation des trainées de condensation en utilisant l'approche RANS et l'approche hybride RANS/LES
Autor: Chmielarski, Vivien
Publikováno v: Mécanique des fluides [physics.class-ph]. Université Paris-Saclay, 2021. Français. ⟨NNT : 2021UPAST071⟩
In the framework of the impact of aviation on climate change studies, contrails and induced cirrus clouds are among the phenomena with the most uncertainty concerning their role. In this context, this thesis aims to select a numerical simulation stra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::088f5bbd68efa1193da691e6318b1e75
https://tel.archives-ouvertes.fr/tel-03433381
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10
Détection et caractérisation des tourbillons de sillage des avions par Lidar Doppler
Autor: Matthieu Valla, Agnès Dolfi-Bouteyre, Laurent Lombard, Alexandre Hallermeyer, Claudine Besson
Publikováno v: Photoniques
Photoniques, EDP Sciences, 2016, 84, p. 28-30. ⟨10.1051/photon/20168428⟩
Dans un contexte où le trafic aérien s'accroît chaque jour, l'optimisation des débits en termes de décollage et d'atterrissage est devenue un enjeu majeur pour les aéroports à forte affluence. Ces débits sont principalement limités par la pr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fd2b2032b8e7954298f7bf1bf710d1a
https://doi.org/10.1051/photon/20199736
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