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Temperature Oscillations in Turbulent Mixed Convective Air Flows

Schmeling, Daniel and Bosbach, Johannes and Wagner, Claus (2012) Temperature Oscillations in Turbulent Mixed Convective Air Flows. 3rd Conference onTurbulence and Interactions, 11. - 15. Jun. 2012, La Saline-les-Bains, Reunion Island.

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Official URL: http://ti2012.onera.fr/node/3

Abstract

We report on temperature oscillations which we observed during experiments in turbulent mixed convection in a rectangular enclosure. We ascribe these temperature fluctuations to oscillations and spontaneous reorientations of the large scale circulations in the flow. Stable temperature configurations, periodic oscillations as well as spontaneous reversals and reorientations were detected. Comparison with smoke visualisations allowed to assign the observed temperature distributions to a certain number and configuration of convection rolls.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:Book of proceedings (in Notes of Numerical Fluid Mechanics and Multidisciplinary Design (NMFM) – Springer)
Title:Temperature Oscillations in Turbulent Mixed Convective Air Flows
Authors:
AuthorsInstitution or Email of Authors
Schmeling, DanielDaniel.Schmeling@dlr.de
Bosbach, JohannesJohannes.Bosbach@dlr.de
Wagner, ClausClaus.Wagner@dlr.de
Date:11 June 2012
Refereed publication:No
In ISI Web of Science:No
Series Name:Official Program and Abstracts
Status:Published
Keywords:Temperature Oscillations, Large Scale Oscillations, Mixed Convection
Event Title:3rd Conference onTurbulence and Interactions
Event Location:La Saline-les-Bains, Reunion Island
Event Type:international Conference
Event Dates:11. - 15. Jun. 2012
Organizer:ONERA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems & Cabin
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Daniel Schmeling
Deposited On:17 Jul 2012 10:02
Last Modified:12 Dec 2013 21:30

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