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Wall Adaptation and Determination of Residual Wall Interferences for a 2D and a 3D Model in the Transonic Wind Tunnel TWG of DLR.

Holst, H. and Bock, K.-W. (1997) Wall Adaptation and Determination of Residual Wall Interferences for a 2D and a 3D Model in the Transonic Wind Tunnel TWG of DLR. In: ICIASF in Monterey, Pacific Grove, California, USA., pp. 174-184. IEEE Publication 97 CH 36121, USA.. ICIASF in Monterey, Pacific Grove, California, USA, September 29 - October 2, 1997..

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Abstract

The transonic wind tunnel TWG of DLR Goettingen has been modernized with respect to an improved flow quality as well as to the logistics of exchangeable test sections, operational reliability and productivity. It is presently equipped with a Laval nozzle (supersonic), a perforated test section (transonic) and a two-dimensional adaptive (subsonic) test section. The latter can perform 2D adaptive tests on wing profiles using the Cauchy integral formula for wall adaptation, as well as 2D wall adaptation for 3D models utilizing the Wedemeyer/Lamarche (VKI) procedure. For both cases the wall adaptation was successful. The 3D force results compare quite well nominally interference-free results and to results from another adaptive test section. The pressure distribution from the wing profile tests agree quite well with theoretical results. For the 3D model, residual wall interferences were determined. It was found that the wall interferences had been reduced to nearly zero on the centreline of the test section by wall adaptation. Spanwise averages of the residual wall interferences have been used for further corrections.

Document Type:Conference or Workshop Item (Paper)
Additional Information: institution=ICIASF, LIDO-Berichtsjahr=1997,
Title:Wall Adaptation and Determination of Residual Wall Interferences for a 2D and a 3D Model in the Transonic Wind Tunnel TWG of DLR.
Authors:
AuthorsInstitution or Email of Authors
Holst, H.UNSPECIFIED
Bock, K.-W.UNSPECIFIED
Date:1997
Journal or Publication Title:ICIASF in Monterey, Pacific Grove, California, USA.
Page Range:pp. 174-184
Publisher:IEEE Publication 97 CH 36121, USA.
Status:Published
Keywords:adaptive testsection, two-dimensional model, threedimensional model, residual wall interference.
Event Title:ICIASF in Monterey, Pacific Grove, California, USA, September 29 - October 2, 1997.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L SI - Versuchs- und Simulationstechniken
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Theoretische Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:36

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