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Scale-Resolving Simulations of the Streamwise Vortex Downstream of a Delta Wing

Probst, Silvia and Knopp, Tobias and Francois, Daniela Gisele and Grabe, Cornelia and Landa, Tim and Radespiel, Rolf (2019) Scale-Resolving Simulations of the Streamwise Vortex Downstream of a Delta Wing. In: AIAA Scitech Forum, 2019. AIAA. AIAA Science and Technology Forum AIAA SciTech 2019, 07.-11. Januar 2019, San Diego, CA, USA. DOI: 10.2514/6.2019-0331 ISBN 978-162410578-4

Full text not available from this repository.

Official URL: https://doi.org/10.2514/6.2019-0331

Abstract

This paper investigates simulation strategies to accurately predict the streamwise Evolution of the longitudinal vortex that is generated at the leading edge of a delta wing. For this purpose different hybrid RANS/LES approaches are assessed by comparison with experimental reference data. As test case a new wind tunnel experiment is considered, which provides detailed data of the vortex evolution downstream of the delta-wing trailing edge using stereoscopic particle image velocimetry. Since in this work the vortex development in the wake is of primary interest, the flow around the delta wing is modeled with RANS, whereas a scale-resolving LES is only applied in its wake. This approach reduces the computational effort compared to pure LES and enables a systematic study of different grid designs and suitable positions of the RANS/LES interface. The results show the importance of applying synthetic turbulence to trigger the generation of resolved structures at the RANS/LES interface.

Item URL in elib:https://elib.dlr.de/124676/
Document Type:Conference or Workshop Item (Speech)
Title:Scale-Resolving Simulations of the Streamwise Vortex Downstream of a Delta Wing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Probst, SilviaDLR AS-CASUNSPECIFIED
Knopp, TobiasDLR AS-CASUNSPECIFIED
Francois, Daniela GiseleDLR AS-CASUNSPECIFIED
Grabe, CorneliaDLR AS-CASUNSPECIFIED
Landa, TimTU BS ISMUNSPECIFIED
Radespiel, RolfTU BS ISMUNSPECIFIED
Date:6 January 2019
Journal or Publication Title:AIAA Scitech Forum, 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.2514/6.2019-0331
Publisher:AIAA
Series Name:Conference Proceedings online
ISBN:978-162410578-4
Status:Published
Keywords:hybrid RANS/LES; Delta-wing; vortex
Event Title:AIAA Science and Technology Forum AIAA SciTech 2019
Event Location:San Diego, CA, USA
Event Type:international Conference
Event Dates:07.-11. Januar 2019
Organizer:AIAA
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: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Grabe, Dr. Cornelia
Deposited On:22 May 2019 19:16
Last Modified:02 Aug 2019 13:16

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