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Reconstruction of a Disturbance Flow Field from Wall Measurements of Tollmien-Schlichting Waves

Seitz, Arne (2014) Reconstruction of a Disturbance Flow Field from Wall Measurements of Tollmien-Schlichting Waves. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag. pp. 203-211. ISBN 978 3 319 03157 6. ISSN 1612-2909

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Abstract

In 2001, flight tests were performed in order to learn more about boundary layer transition induced by free-stream excited Tollmien-Schlichting waves. A sixty four element hot-film array, placed on the right hand wing of DLR’s flying test-bed LFU-205, was used to measure the wall shear stress fluc-tuations provoked by these instabilities while propagating in the laminar bound-ary layer. In the present work, a procedure was developed that allows the reconstruction of the disturbed flow field above the hot-film sensors from the wall measurements by employing linear stability analysis. The reconstruction delivers the fluctuations of all flow quantities, i.e. disturbance velocity components, pressure, temperature and density. A comparison of the reconstructed longitudinal disturbance velocity component u’ with hot-wire measurements shows good qualitative agreement.

Item URL in elib:https://elib.dlr.de/91131/
Document Type:Contribution to a Collection
Title:Reconstruction of a Disturbance Flow Field from Wall Measurements of Tollmien-Schlichting Waves
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Seitz, Arnearne.seitz (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. 203-211
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:Tollmien-Schlichting wave, flight experiment, wall shear stress, hot-film, linear stability analysis
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 - Flight Physics
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Seitz, Dr.-Ing. Arne
Deposited On:16 Oct 2014 11:04
Last Modified:27 Feb 2015 11:32

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