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Large-Eddy Simulation of turbulent separated flows around an airfoil

Shishkin, Andrei and Wagner, Claus (2008) Large-Eddy Simulation of turbulent separated flows around an airfoil. Deutscher Luft- und Raumfahrtkomgress 2008, 2008-09-23 - 2008-09-25, Darmstadt.

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Abstract

Large Eddy Simulations (LES) of turbulent flows around a segment of the FX-79-W151 rotor blade have been performed for different Reynolds numbers between $Re = 5cdot 10^3$ and $Re = 10^5$ and the angle of attack $12^circ$ using a spectral/hp element method (SEM). The instantaneous and statistically avergaged flow fields predicted in LES for $Re = 5cdot 10^3$ and $Re = 5cdot 10^4$ are analysed and compared. The turbulence statistics including the distributions of the pressure coefficients reveal regions of laminar and turbulent flow separation above the blade segment for the lower and higher Reynolds numbers, respectively. Finally some specific aspects regarding the application of the spectral/hp element method in LES are presented and discussed.

Document Type:Conference or Workshop Item (Speech)
Title:Large-Eddy Simulation of turbulent separated flows around an airfoil
Authors:
AuthorsInstitution or Email of Authors
Shishkin, AndreiUNSPECIFIED
Wagner, ClausUNSPECIFIED
Date:30 September 2008
Keywords:Large Eddy simulation, airfoil, flow separation
Event Title:Deutscher Luft- und Raumfahrtkomgress 2008
Event Location:Darmstadt
Event Type:national Conference
Event Dates:2008-09-23 - 2008-09-25
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E - no assignement
DLR - Research area:Energy
DLR - Program:E - no assignement
DLR - Research theme (Project):E -- no assignement
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Dr. Andrey Shishkin
Deposited On:24 Mar 2009
Last Modified:27 Apr 2009 15:40

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