elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Measurement of 3D Flow Structures of Turbulent Mixed Convection in a Rectangular Sample during Reconfiguration Events

Mommert, Michael and Schiepel, Daniel and Schmeling, Daniel and Wagner, Claus (2018) Measurement of 3D Flow Structures of Turbulent Mixed Convection in a Rectangular Sample during Reconfiguration Events. International Conference on Rayleigh-Bénard Turbulence 2018, 14.-18. Mai 2018, Enschede, Niederlande.

[img] PDF - Registered users only
919kB

Official URL: https://pof.tnw.utwente.nl/rbc2018/wp-content/uploads/2018/05/RBC2018_abstract_booklet.pdf

Abstract

The flow in a mixed convection system is investigated in order to bridge the gap between fundamental Rayleigh- Bénard convection and the ventilation of passenger cabins. Our previous studies have revealed flow reconfigurations in certain parameter ranges. Yet the causing mechanism and the three-dimensional reconfiguration process of these events are still unknown. Therefore, we applied tomographic Particle Image Velocimetry (PIV) with helium-filled soap bubbles illuminated by an LED array to resolve secondary flow structures and to clarify whether the convection roll propagates in longitudinal direction during reconfiguration events. To capture these events the PIV acquisition was started after fulfilling a temperature condition. At the conference we will discuss the time development of the roll’s alignment as well as the interaction of the primary roll with secondary structures over the course of a reconfiguration.

Item URL in elib:https://elib.dlr.de/119374/
Document Type:Conference or Workshop Item (Speech)
Title:Measurement of 3D Flow Structures of Turbulent Mixed Convection in a Rectangular Sample during Reconfiguration Events
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mommert, Michaelmichael.mommert (at) dlr.deUNSPECIFIED
Schiepel, Danieldaniel.schiepel (at) dlr.deUNSPECIFIED
Schmeling, DanielDaniel.Schmeling (at) dlr.dehttps://orcid.org/0000-0003-2712-9974
Wagner, ClausClaus.Wagner (at) dlr.deUNSPECIFIED
Date:2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:tomographic PIV, mixed convection, flow reconfiguration
Event Title:International Conference on Rayleigh-Bénard Turbulence 2018
Event Location:Enschede, Niederlande
Event Type:international Conference
Event Dates:14.-18. Mai 2018
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 > Fluid Systems, GO
Deposited By: Bachmann, Barbara
Deposited On:17 May 2018 14:55
Last Modified:22 May 2018 13:12

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.