|Title:||Comparison of Two Large–Eddy Simulations for a Stalled Airfoil Flow Using Different Finite–Volume Formulations||Authors:||Joviĉić, Nikola
|Language:||eng||Subject (DDC):||000 Informatik, Information & Wissen, allgemeine Werke
|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||Abstract:||
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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