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High accuracy determination of skin friction differences in an air channel flow based on pressure drop measurements
Andreas Güttler
2017
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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.
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Keywords
- accuracy
- drag reduction
- Druckmessung
- Kanalströmung
- Messgenauigkeitchannel flow
- pressure measurement
- Riblets
- Wandreibung