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Our main pages on this subject:
| 1. | Wind turbines, computers in the fields - Zoom in the Lab | | | To improve these performances, " pitch " regulated wind turbines have been designed and are increasingly replacing " stall " regulated wind turbines.... " These pitch wind turbines are more complicated due to the control system, but have better performances than the stall wind turbines, says Marc Rapin.... | | | | 2. | Stall, by elsA - the Onera CFD software - ONERA's Science Pictures | | | Stall, by elsA - the Onera CFD software - ONERA's Science Pictures... Stall, by elsA... Zonal Detached-Eddy Simulation (ZDES) of the flow around a 3D wing of finite span in stalled configuration by the elsA software [ computation by François Richez, Michel Costes, Robert Gaveriaux, " Helicopters, Propellers, Turbomachine " unit of the Applied Aerodynamics Department ]... | | | | 3. | new age turbulence | | | QDNS of a flow around a OA209 blade profile at stall incidence... Outline (Dynamic) Stall phenomenon physical mechanism Current (U) RANS prediction capacity... QDNS in the stall context... QDNS of a flow around a OA209 blade profile at stall incidence - configuration and HPC simulation presentation - first results analysis... | | | | 4. | Aerodynamics of Helicopters - Publications - ONERA / DAAP-EN | | | A. Le Pape, J. Lecanu, 3D Navier-Stokes computations of a stall regulated wind turbine.... M. Costes, V. Gleize, J. Szydlowski, L. Sankar, G. Guzel, M. Rhee, Grid sensitivity study for the turbulent viscous flow around a NASA0015 airfoil at stall.... J. Szydlowski, M. Costes, V. Gleize, Numerical and physical analysis of the turbulent viscous flow around a NACA0015 profile at stall.... | | | | 5. | Aerodynamic Instabilities - ONERA / DAAP-EN | | | 3D calculation of a Rotating Stall State... Figure 1 : instantaneous entropy field (Three-cell rotating stall state) [ videos : and ]... Rotating stall is a 3D phenomenon characterized by the presence of pockets of separated fluid that move at a slower speed than that of the rotor.... 1). The simulation performed with the elsA software can be used to predict the appearance of this type of state and delimit, at least in part, the origins for the rotating stall.... | | | | 6. | Aerodynamics of Turbomachines - Publications - ONERA / DAAP-EN | | | stall... Stall... 4-9, 2005, Munich, Germany. 8 N. Gourdain, S. Burguburu, F. Leboeuf, Rotating Stall in a Subsonic Compressor : a Numerical Study, 40ème colloque d'Aérodynamique Appliquée, paper 31 - 18, March 21-23, 2005, Toulouse, France. 9 T. Onishi, S. Burguburu, O. Dessornes, Y. Ribaud, Numerical Design and Study of a MEMS-Based Micro Turbine, ASME Turbo Expo 2005, June 6-9, Rena, Nevada, USA. [ 10 ] A. Fourmaux, A. Giacchetto, Numerical Analysis of the Flow in the Fans of the S1 Modane Large Wind Tunnel, 6th European Conference on Turbomachinery Fluids Dynamics and Thermodynamics, March 14-17, 2005, Lille, France. [ 11 ] A. Fourmaux, Calcul Instationnaire des Interactions entre Roues de Turbine.... | | | | 7. | Numerical simulation in a stage of axial-flow compressor during rotating stall - ONERA's Science Pictures | | | Numerical simulation in a stage of axial-flow compressor during rotating stall - ONERA's Science PicturesWho are we ?Science Pictures... Stage of an Axial-Flow Compressor during Rotating Stall copyright © ONERA 1996-2006 - All rights reserved. Vizualization of the 3D structures, colored according to pressure, in a stage of an axial-flow compressor during rotating stall (elsA calculation). | | | | 8. | Helicopters (HELI4) | | | Dynamic Stall over a Rotor of Helicopter in Forward Flight... | | | | 9. | Helicopters (HELI4) | | | Dynamic Stall over a Rotor of Helicopter in Forward Flight... | | | | 10. | untitled | | | Zonal RANS / LES coupling simulation of a transitional and separated flow around an airfoil near stall... Numerical simulations of the flow around an airfoil at static and dynamic stall is still a very challenging task for CFD application.... Hence, we decide to use a zonal RANS / LES approach in order to have a more accurate description of the transition, which might improve the numerical prediction of stall.... | | |
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