Title: Comparison of Two Large–Eddy Simulations for a Stalled Airfoil Flow Using Different Finite–Volume Formulations
Authors: Joviĉić, Nikola
Evans, G.
Breuer, Michael 
Friedrich, Rainer
Language: eng
Subject (DDC): 000 Informatik, Information & Wissen, allgemeine Werke
500 Naturwissenschaften
600 Technik
Issue Date: 2004
Publisher: Springer
Document Type: Book Part
Source: Jovičić, N., Evans, G., Breuer, M., Friedrich, R. (2004). Comparison of Two Large-Eddy Simulations for a Stalled Airfoil Flow Using Different Finite-Volume Formulations. In: Wagner, S., Kloker, M., Rist, U. (eds) Recent Results in Laminar-Turbulent Transition. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 86. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45060-3_23
Journal / Series / Working Paper (HSU): Notes on Numerical Fluid Mechanics and Multi- disciplinary Design
Volume: 86
Page Start: 293
Page End: 306
Published in (Book): Recent Results in Laminar-Turbulent Transition
Publisher Place: Berlin
In the present paper a comparison of two different LES predictions was carried out for the flow around an unswept wing with leading-edge stall. The configuration is associated with the COSTWING initiative in which the flow around a NACA-4415 airfoil is studied experimentally for the high-lift case and beyond. As a first step towards the investigation of separated turbulent flows, simulations based on two different LES codes were performed for a fixed set of parameters defined by a low Reynolds number Re c = 20,000 and a high angle of attack α = 18°. Both are second-order accurate finitevolume methods but differ with respect to the grid configurations applied. The first is written for arbitrary non-orthogonal (colocated) block-structured grids (LESOCC), whereas the second uses a non-uniform Cartesian (staggered) grid arrangement with a special interpolation technique near curvilinear boundaries (MGLET). The predicted results are compared in detail considering the averaged flow field, several important integral parameters, and finally higher-order statistics. At large a very good agreement of both LES data is found. Smaller deviations occurring especially with respect to higher-order moments are discussed and evaluated.
Organization Units (connected with the publication): Strömungsmechanik 
ISBN: 978-3-642-07345-8
Publisher DOI: 10.1007/978-3-540-45060-3_23
Appears in Collections:6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)

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