Niehaus, Konstantin A and Mommert, Michael and Schiepel, Daniel and Schmeling, Daniel and Wagner, Claus (2020) Comparison of two unstable flow states in turbulent mixed convection. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, pp. 543-552. Springer Nature. 21. STAB/DGLR Symposium 2018, 6.-7. Nov. 2018, Darmstadt, Deutschland. doi: 10.1007/978-3-030-25253-3_52. ISBN 978-3-030-25252-6. ISSN 1612-2909.
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Official URL: https://doi.org/10.1007/978-3-030-25253-3_52
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.
Item URL in elib: | https://elib.dlr.de/120454/ | |||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||||||||
Additional Information: | Print ISBN 978-3-030-25252-6 Online ISBN 978-3-030-25253-3 ISSN-electronic 1860-0824 | |||||||||||||||||||||
Title: | Comparison of two unstable flow states in turbulent mixed convection | |||||||||||||||||||||
Authors: |
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Date: | 2020 | |||||||||||||||||||||
Journal or Publication Title: | 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics | |||||||||||||||||||||
Refereed publication: | Yes | |||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | Yes | |||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||
Volume: | 142 | |||||||||||||||||||||
DOI : | 10.1007/978-3-030-25253-3_52 | |||||||||||||||||||||
Page Range: | pp. 543-552 | |||||||||||||||||||||
Editors: |
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Publisher: | Springer Nature | |||||||||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | |||||||||||||||||||||
ISSN: | 1612-2909 | |||||||||||||||||||||
ISBN: | 978-3-030-25252-6 | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | mixed convection, generic passenger cabin ventilation, rayleigh-bernard convection, Stereo PIV, flow reconfiguration | |||||||||||||||||||||
Event Title: | 21. STAB/DGLR Symposium 2018 | |||||||||||||||||||||
Event Location: | Darmstadt, Deutschland | |||||||||||||||||||||
Event Type: | international Conference | |||||||||||||||||||||
Event Dates: | 6.-7. Nov. 2018 | |||||||||||||||||||||
Organizer: | STAB/DGLR | |||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||||||||
HGF - Program: | Transport | |||||||||||||||||||||
HGF - Program Themes: | Terrestrial Vehicles (old) | |||||||||||||||||||||
DLR - Research area: | Transport | |||||||||||||||||||||
DLR - Program: | V BF - Bodengebundene Fahrzeuge | |||||||||||||||||||||
DLR - Research theme (Project): | V - Next Generation Train III (old) | |||||||||||||||||||||
Location: | Göttingen | |||||||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Ground Vehicles | |||||||||||||||||||||
Deposited By: | Niehaus, Konstantin A | |||||||||||||||||||||
Deposited On: | 04 Dec 2018 12:15 | |||||||||||||||||||||
Last Modified: | 18 Jun 2020 09:49 |
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