Title: An LES Investigation of the Separated Flow Past An Airfoil at High Angle of Attack
Authors: Breuer, Michael 
Jovicic, Nikola
Language: eng
Subject (DDC): 000 Informatik, Information & Wissen, allgemeine Werke
500 Naturwissenschaften
600 Technik
Issue Date: 2001
Publisher: Kluwer Academic Publishers
Document Type: Conference Object
Source: Breuer, M., Jovičić, N. (2001). An LES Investigation of the Separated Flow Past an Airfoil at High Angle of Attack. In: Geurts, B.J., Friedrich, R., Métais, O. (eds) Direct and Large-Eddy Simulation IV. ERCOFTAC Series, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1263-7_20
Journal / Series / Working Paper (HSU): ERCOFTAC Series
Volume: 8
Page Start: 165
Page End: 172
Published in (Book): Direct and Large-Eddy Simulation IV
Publisher Place: Dordrecht
Conference: 4th Workshop on Direct and Large Eddy Simulation, Enschede, The Netherlands, July 18–20, 2001
An investigation of the separated flow past an unswept wing (NACA-4415 airfoil) at high angle of attack ($\alpha$ = 18{\textdegree}) was carried out based on large-eddy simulations. As a first step a relatively low chord Reynolds number of Rec= 20, 000 was chosen yielding a leading-edge stall. The flow field in this range of $\alpha$ and Recis dominated by asymmetric vortex shedding with a Strouhal number St{\textasciiacutex} ≈ 0.2. A strong vortex develops almost periodically in the vicinity of the trailing edge. The life cycle of this vortex structure is controlling the flow field. At the leeward side of the airfoil a large clockwise rotating recirculation region of nearly constant pressure exists. A periodically occurring shedding motion of this vortical structure into the wake is not observed. The entire flow field is very similar to the previously investigated flow past an inclined flat plate.
Organization Units (connected with the publication): Strömungsmechanik 
ISBN: 978-90-481-5893-5
Publisher DOI: 10.1007/978-94-017-1263-7_20
Appears in Collections:6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)

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