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Evaluation of Hybrid RANS/LES Methods for Computing Flow over a Prolate Spheroid

Lakshmipathy, Sunil (2014) Evaluation of Hybrid RANS/LES Methods for Computing Flow over a Prolate Spheroid. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag. pp. 475-484. ISBN 978-3-319-03157-6. ISSN 1612-2909

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Abstract

The objective of the current study is towards comparative assessment of the performance of hybrid RANS/LES turbulence models in predicting flow over a 6:1 prolate spheroid. Two hybrid RANS/LES turbulence models formulated in seamless framework are assessed for their predictive capabilities in performing aerodynamic analysis of the prolate spheroid geometry at relatively low angles of attack. The turbulence models of interest in this study are the Partially-Averaged Navier Stokes (PANS) of Girimaji and Scale-Adaptive Simulations (SAS) method of Menter. PANS and SAS model computations of flow over the prolate spheroid geometry are performed at incidence angles of 10° and 20° to match the experimental flow conditions of Kreplin, and Chesnakas and Simpson, respectively. Distribution of the surface quantities at various sections are reported. The agreement between the computations and the experimental data improve for the higher incidence angle.

Item URL in elib:https://elib.dlr.de/91154/
Document Type:Contribution to a Collection
Title:Evaluation of Hybrid RANS/LES Methods for Computing Flow over a Prolate Spheroid
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lakshmipathy, Sunilsunil.lakshmipathy (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics IX
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:124
Page Range:pp. 475-484
Editors:
EditorsEmail
Dillmann, AndreasDLR Göttingen
Heller, GerdAirbus Deutschland
Krämer, EwaldUniversität Stuttgart
Kreplin, Hans-PeterDLR Göttingen
Nitsche, WolfgangTU Berlin
Rist, UlrichUniverstität Stuttgart
Publisher:Springer Verlag
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-319-03157-6
Status:Published
Keywords:Navier Stokes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Seyfried, Beate
Deposited On:20 Oct 2014 11:53
Last Modified:27 Feb 2015 11:27

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