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: | 25 Apr 2023 12:20 |
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