Landa, Tim and Klug, Lorenz and Radespiel, Rolf and Probst, Silvia and Knopp, Tobias (2018) Experimental and Numerical Analysis of a Streamwise Vortex Downstream of a Delta Wing. In: 48th AIAA Fluid Dynamics Conference. 48th Fluid Dynamics Conference 2018, AIAA AVIATION Forum, (AIAA 2018-4157), 25.-29. Jun. 2018, Atlanta, USA. doi: 10.2514/6.2018-4157. ISBN 978-162410553-1. ISSN 2018-4157.
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Official URL: https://arc.aiaa.org/doi/10.2514/6.2018-4157
Abstract
The present paper analyzes the vortical flow downstream of a delta wing. The Delta wing is designed to generate a vortex which resembles the vortex of a nacelle strake. The experimental results of stereo-PIV measurements performed at different positions downstream of the delta wing display the streamwise development of the vortex. The distributions of the mean axial and tangential velocity components and Reynolds-stresses characterize the vortex development. In addition, results of numerical simulations with the DLR TAU-code applying the Menter-SST eddy viscosity model and the SSG/LRR-Omega Reynolds-Stress model show the ability of the turbulence models to capture the vortex development. The experimental results indicate a preservation of the vortex strength and structure downstream of the delta wing. The Menter-SST model does not predict this preservation, rather it computes a rapid decay of the vortex strength and an increase of the vortex size. In contrast, the results of the SSG/LRR-Omega model are in good Agreement with the experiments concerning the mean flow development. However, turbulence in the vortex core is underpredicted by both turbulence models.
Item URL in elib: | https://elib.dlr.de/121858/ | ||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||
Title: | Experimental and Numerical Analysis of a Streamwise Vortex Downstream of a Delta Wing | ||||||||||||||||||
Authors: |
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Date: | 2018 | ||||||||||||||||||
Journal or Publication Title: | 48th AIAA Fluid Dynamics Conference | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | No | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
DOI : | 10.2514/6.2018-4157 | ||||||||||||||||||
ISSN: | 2018-4157 | ||||||||||||||||||
ISBN: | 978-162410553-1 | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Delta Wing, Strake Vortex, CFD, Experiment,vwind tunnel Experiment; PIV; RSM | ||||||||||||||||||
Event Title: | 48th Fluid Dynamics Conference 2018, AIAA AVIATION Forum, (AIAA 2018-4157) | ||||||||||||||||||
Event Location: | Atlanta, USA | ||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||
Event Dates: | 25.-29. Jun. 2018 | ||||||||||||||||||
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 (old) | ||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > CASE, GO | ||||||||||||||||||
Deposited By: | Probst, Dr. Silvia | ||||||||||||||||||
Deposited On: | 07 Nov 2018 15:16 | ||||||||||||||||||
Last Modified: | 09 Jan 2019 02:11 |
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