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Implementation of a Method to Determine Aerodynamic Propeller-Wing Interaction Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Comparison of Two Unstable Flow States in Turbulent Mixed Convection

Authors : Konstantin A. Niehaus, Michael Mommert, Daniel Schiepel, Daniel Schmeling, Claus Wagner

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

Publisher: Springer International Publishing

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Abstract

We present an experimental study focusing on the large- and small-scale structures in turbulent mixed convection. Measurements are conducted at stable conditions and during a reconfiguration event using temperature probes and triggered stereoscopic particle image velocimetry. It is found that the amplitude of the temperature distribution is higher for a state with three Large-Scale Circulations (LSC) than for a state with four LSCs. Furthermore, a correlation analysis of velocity fields measured during a reconfiguration process reveals the change of the dominant LSC mode. However, the mean spatial power distribution computed via a fast Fourier transformation reflects no changes in small-scale flow structures.

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Metadata
Title
Comparison of Two Unstable Flow States in Turbulent Mixed Convection
Authors
Konstantin A. Niehaus
Michael Mommert
Daniel Schiepel
Daniel Schmeling
Claus Wagner
Copyright Year
2020
Book
New Results in Numerical and Experimental Fluid Mechanics XII

Print ISBN: 978-3-030-25252-6

Electronic ISBN: 978-3-030-25253-3

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-25253-3_52

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