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Main Title: A wall shear stress measurement technique using the thermal wakes of small heated spots
Author(s): Rudolph, I.
Reyer, M.
Nitsche, W.
Type: Article
Language Code: en
Abstract: A new thermo-optical method for the measurement of wall shear stresses is presented. The technique exploits that the surface temperature field and the near wall flow are closely linked by correlating the thermal wakes of small heated spots with the wall shear stress. Numerical as well as experimental results are presented and different correlation and design parameters are examined. In contrast to recent works, where the thermal tuft length is used for a correlation with the wall shear stress, other parameters were found to be much better suited for a skin friction calibration. It is also shown that the new method has the unique capability to not only measure the magnitude of the wall shear stress but also its direction.
Issue Date: 2009
Date Available: 8-Jan-2019
DDC Class: 380 Handel, Kommunikation, Verkehr
620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): wall shear stress measurement
infrared thermography
quantitative infrared thermography
sensor development
Journal Title: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Publisher: SAGE Publications
Publisher Place: Washington, DC
Volume: 223
Issue: 6
Publisher DOI: 10.1243/09544100JAERO518
Page Start: 683
Page End: 690
EISSN: 2041-3025
ISSN: 0954-4100
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Luft- und Raumfahrt » Publications

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