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Aerodynamic behaviour of NREL S826 airfoil at Re=100,000
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, Centres, SeRC - Swedish e-Science Research Centre.
2014 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 524, no 1, 012027Article in journal (Refereed) Published
Abstract [en]

This paper presents wind tunnel measurements of the NREL S826 airfoil at Reynolds number Re 100,000 for angles of attack in a range of -10° to 25° the corresponding Large Eddy Simulation (LES) for selected angles of attack. The measurements have been performed at the low speed wind tunnel located at Fluid Mechanics laboratory of the Technical University of Denmark (DTU). Lift coefficient is obtained from the forge gauge measurements while the drag is measured according to the integration of the wake profiles downstream of the airfoil. The pressure distribution is measured by a set of pressure taps on the airfoil surface. The lift and drag polars are obtained from the LES computations using DTU's inhouse CFD solver, EllipSys3D, and good agreement is found between the measurement and the simulations. At high angles of attack, the numerical computations tend to over-predict the lift coefficients, however, there is a better agreement between the drag measurements and computations. It is concluded that LES computations are able to capture the lift and drag polars as well as the pressure distribution around the airfoil with an acceptable accuracy.

Place, publisher, year, edition, pages
2014. Vol. 524, no 1, 012027
Keyword [en]
Angle of attack, Drag, Fluid mechanics, Large eddy simulation, Lift, Pressure distribution, Reynolds number, Torque, Wind tunnels, Airfoil surfaces, Gauge measurements, High angles of attack, Low-speed wind tunnel, Mechanics laboratory, Numerical computations, Technical University of Denmark, Wind tunnel measurements, Airfoils
National Category
Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-168356DOI: 10.1088/1742-6596/524/1/012027ISI: 000344193600027ScopusID: 2-s2.0-84903705726OAI: diva2:817335
5th Science of Making Torque from Wind Conference, TORQUE 2014; Copenhagen; Denmark; 18 June 2014 through 20 June 2014
Swedish e‐Science Research Center

QC 20150605

Available from: 2015-06-05 Created: 2015-06-02 Last updated: 2015-06-05Bibliographically approved

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Sarmast, Sasan
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MechanicsLinné Flow Center, FLOWSeRC - Swedish e-Science Research Centre
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