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Numerical Investigation of Slot and Configuration Impact on the Efficiency of Tangential Blowing at a Vertical Tailplane with Infinite Span Read chapter Read first chapter

2018 | OriginalPaper | Chapter

Flow Manipulation by Standing Acoustic Waves and Visualization with Background Oriented Schlieren (BOS)

Authors : Christian Kiefer, Dara Feili, Karin Bauer, Helmut Seidel

Published in: New Results in Numerical and Experimental Fluid Mechanics XI

Publisher: Springer International Publishing

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Abstract

In this work, a novel approach for flow manipulation by standing acoustic waves is presented. A phased array of ultrasonic transducers operating at 40 kHz is used to generate acoustic waves of various patterns. The interaction of these wave patterns with a thermally induced air flow (thermal convection) is evaluated. The Background Oriented Schlieren method (BOS) in combination with a thermal “contrast medium” allowed a clear visualization of the effects. The final images were generated from the raw data by applying an easy to implement pixel-by-pixel difference method.

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previous chapter Linear and Nonlinear Growth of Secondary Instabilities of Stationary Crossflow Vortices Studied by Parabolized Stability Equations
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Footnotes
1
In this work GIMP Version 2.8.16 was used.
 
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Metadata
Title
Flow Manipulation by Standing Acoustic Waves and Visualization with Background Oriented Schlieren (BOS)
Authors
Christian Kiefer
Dara Feili
Karin Bauer
Helmut Seidel
Copyright Year
2018
Book
New Results in Numerical and Experimental Fluid Mechanics XI

Print ISBN: 978-3-319-64518-6

Electronic ISBN: 978-3-319-64519-3

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-64519-3_21

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