› › High Accuracy Determination Of Skin Friction Differences In An Air Channel Flow Based On Pressure Drop Measurements

High accuracy determination of skin friction differences in an air channel flow based on pressure drop measurements

Author : Güttler, Andreas

Publisher : KIT Scientific Publishing

Page : 238 pages

File Size : 21,97 MB

Release : 2017-04-13

Category : Technology (General)

ISBN : 3731505029

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Book Description

The present work delivers a versatile, accurate and reliable wind tunnel facility that is particularly developed to test different flow control techniques for drag reduction in precisely adjustable test conditions. Skin friction changes of 0.4% are resolved, which is comparable to the most accurate reported studies in liquids. this high accuracy is verified through a comprehensive uncertainty analysis. Subsequently, various passive and active flow control strategies are investigated.



High Accuracy Determination of Skin Friction Differences in an Air Channel Flow Based on Pressure Drop Measurements

Author : Andreas Güttler

Publisher : Saint Philip Street Press

Page : 234 pages

File Size : 36,84 MB

Release : 2020-10-09

Category :

ISBN : 9781013280184

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Book Description

The present work delivers a versatile, accurate and reliable wind tunnel facility that is particularly developed to test different flow control techniques for drag reduction in precisely adjustable test conditions. Skin friction changes of 0.4% are resolved, which is comparable to the most accurate reported studies in liquids. this high accuracy is verified through a comprehensive uncertainty analysis. Subsequently, various passive and active flow control strategies are investigated. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.













Skin-friction Measurements in Incompressible Flow

Author : Donald W. Smith

Publisher :

Page : 44 pages

File Size : 12,4 MB

Release : 1959

Category : Compressibility

ISBN :

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Book Description

Experiment have been conducted to measure the local surface-shear stress and the average skin-friction coefficient in incompressible flow for a turbulent boundary layer on a smooth flat plate having zero pressure gradient. Data were obtained for a range of Reynolds numbers from 1 million to 45 million. The local surface-shear stress was measured by a floating-element skin-friction balance and also by a calibrated total head tube located on the surface of the test wall. The average skin-friction coefficient was obtained from boundary-layer velocity profiles.