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Unstructured mesh capabilities for supersonic wing design at low speed conditions

Gaffuri, Michele and Brezillon, Joel (2011) Unstructured mesh capabilities for supersonic wing design at low speed conditions. ECCOMAS Thematic Conference CFD & OPTIMIZATION, 23-25 May 2011, Antalya, Turkey. ISBN 978 605 61427 4 1

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Abstract

In this paper the reliability of using unstructured meshes for the CFD simulation of the flow over a low aspect-ratio wing in low speed configuration is investigated. It is intended to integrate such mesh strategy in a high-fidelity aerodynamic shape optimization loop for the design of high lift devices, so particular care is given to the set-up of a suitable meshing procedure usable in optimization context. Meshes are created using the grid generators Solar and Centaur; the CFD analysis is carried out using the DLR-TAU solver on the EPISTLE wing-body configuration with drop-nose slat. Results are compared to wind tunnel test data and to CFD results obtained on a structured mesh. It is shown that a grid of around 10 million points, if carefully conceived, is able to predict with reasonably good accuracy the aerodynamic loads and the overall flow features. Some discrepancies in the detection of vortical flow features are found, but they do not have significant influence on the computed loads. The application of the method at various Reynolds numbers confirms the importance of the prismatic layer thickness to accurately capture the vortical flow features.

Item URL in elib:https://elib.dlr.de/72034/
Document Type:Conference or Workshop Item (Paper)
Title:Unstructured mesh capabilities for supersonic wing design at low speed conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gaffuri, MicheleDLRUNSPECIFIED
Brezillon, JoelDLRUNSPECIFIED
Date:2011
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Tuncer, I. H.UNSPECIFIED
ISBN:978 605 61427 4 1
Status:Published
Keywords:CFD, MDO, Vortex dominated flow, Unstructured mesh, Supersonic wing, High lift devices
Event Title:ECCOMAS Thematic Conference CFD & OPTIMIZATION
Event Location:Antalya, Turkey
Event Type:international Conference
Event Dates:23-25 May 2011
Organizer:ECCOMAS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Gaffuri, Michele
Deposited On:29 Nov 2011 09:25
Last Modified:31 Jul 2019 19:33

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