|Title:||Flow around a Surface Mounted Cubical Obstacle: Comparison of LES and RANS Results||Authors:||Breuer, Michael
|Language:||eng||Subject (DDC):||000 Informatik, Information & Wissen, allgemeine Werke
|Issue Date:||1996||Editors:||Deville, M.
Rhyming, I. L.
|Publisher:||Vieweg+Teubner Verlag||Document Type:||Conference Object||Source:||Breuer, M., Lakehal, D., Rodi, W. (1996). Flow around a Surface Mounted Cubical Obstacle: Comparison of LES and RANS-Results. In: Deville, M., Gavrilakis, S., Ryhming, I.L. (eds) Computation of Three-Dimensional Complex Flows. Notes on Numerical Fluid Mechanics (NNFM), vol 49. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-89838-8_4||Volume:||53||Page Start:||22||Page End:||30||Published in (Book):||Computation of 3D Complex Flows||Publisher Place:||Wiebaden||Conference:||IMACS–COST Conf. on Computational Fluid Dynamics, Three-Dimensional Complex Flows, Lausanne, Switzerland, Sept. 13–15, 1995||Abstract:||
The paper deals with a comparative study of LES and RANS (k-$\epsilon$ model) results for a typical bluff-body flow, namely the flow around a surface mounted cubical obstacle placed in a plane channel. For this test case detailed experimental data (Re=40,000) are available . Two slightly different numerical solution procedures based on a 3-D finite-volume method are used in this investigation. The Reynolds-averaged equations for incompressible flow are solved implicitly , whereas in the LES code [1, 2, 3, 4, 5] an explicit second order Adams-Bashforth scheme is applied. Different formulations of the k-$\epsilon$ turbulence model are used in the RANS simulations, the standard version with wall functions, a RNG version, a modified version proposed by Kato and Launder , and a two-layer approach. For modeling the non-resolvable subgrid-scale motion in the LES two different models are applied, namely the well known Smagorinsky model  as well as the dynamic model originally proposed by Germano et al. . The capability of the different methods is demonstrated by comparison with the measurements.
|Organization Units (connected with the publication):||Strömungsmechanik||ISBN:||978-3-322-89838-8||Publisher DOI:||10.1007/978-3-322-89838-8_4|
|Appears in Collections:||6 - Bibliographic Data - Publications of the HSU Researchers (before HSU)|
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