elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Experimental and numerical investigation of 3-D corner separation in a channel flow with adverse pressure gradient

Klinner, Joachim and Schroll, Michael and Morsbach, Christian and Möller, Felix and Willert, Christian (2018) Experimental and numerical investigation of 3-D corner separation in a channel flow with adverse pressure gradient. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 12 (142), pp. 663-673. Springer Nature. 21. DGLR- Fachsymposium der STAB, 6.-7. November 2018, Darmstadt. DOI: 10.1007/978-3-030-25253-3 ISBN 978-3-030-25252-6 ISSN 1612-2909

[img] PDF - Registered users only
3MB
[img] PDF
2MB

Official URL: https://link.springer.com/chapter/10.1007/978-3-030-25253-3_63

Abstract

Measurements of a plane one-sided diffuser with a variable expansion ratio are compared with RANS simulations at a Reynolds number of 51,000. Two-component PIV provides boundary conditions and a global validation of mean velocities. Profile PIV is applied to evaluate the wall shear stress and to measure turbulence statistics. Typical measurement uncertainties found in the buffer layer and in the separation region are below 1% for the mean and below 6% for the Reynolds stresses. Consistency of turbulence statistics is demonstrated by comparison with DNS. A first comparison with RANS simulations reveals significant differences between the eddy viscosity model and both Reynolds stress models, which predict qualitatively different developments of the vortex system over the corner separation.

Item URL in elib:https://elib.dlr.de/123719/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental and numerical investigation of 3-D corner separation in a channel flow with adverse pressure gradient
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Klinner, JoachimJoachim.Klinner (at) dlr.dehttps://orcid.org/0000-0003-2709-9664
Schroll, MichaelMichael.Schroll (at) dlr.dehttps://orcid.org/0000-0003-0736-546X
Morsbach, ChristianChristian.Morsbach (at) dlr.dehttps://orcid.org/0000-0002-6254-6979
Möller, Felixfelix.moeller (at) dlr.deUNSPECIFIED
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181
Date:6 November 2018
Journal or Publication Title:21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:12
DOI :10.1007/978-3-030-25253-3
Page Range:pp. 663-673
Editors:
EditorsEmailEditor's ORCID iD
Dillmann, AndreasUNSPECIFIEDUNSPECIFIED
Heller, GerdUNSPECIFIEDUNSPECIFIED
Krämer, EwaldUNSPECIFIEDUNSPECIFIED
Wagner, ClausUNSPECIFIEDUNSPECIFIED
Tropea, CameronUNSPECIFIEDUNSPECIFIED
Jakirlić, SuadUNSPECIFIEDUNSPECIFIED
Publisher:Springer Nature
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design-New Results in Numerical and Experimental Fluid Mechanics-
ISSN:1612-2909
ISBN:978-3-030-25252-6
Status:Published
Keywords:particle image velocimetry, wall shear stress, skin friction, RANS, Reynolds stress model, PIV, TRACE, validation experiment, adverse pressure gradient, APG
Event Title:21. DGLR- Fachsymposium der STAB
Event Location:Darmstadt
Event Type:national Conference
Event Dates:6.-7. November 2018
Organizer:TU Darmstadt
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 - VicToria
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Klinner, Joachim
Deposited On:17 Dec 2018 09:58
Last Modified:02 Apr 2020 11:55

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.