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Towards the Combination of Thermochromic Liquid Crystals and Tomographic Particle Image Velocimetry

Schiepel, Daniel and Bosbach, Johannes and Wagner, Claus (2014) Towards the Combination of Thermochromic Liquid Crystals and Tomographic Particle Image Velocimetry. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag, Cham Heidelberg New York Dordrecht London. pp. 525-533. ISBN 978-3-319-03157-6. ISSN 1612-2909

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Official URL: http://link.springer.com/chapter/10.1007/978-3-319-03158-3_53

Abstract

A non-invasive method to simultaneously measure the three-dimensional velocity and temperature fields in thermal convection would be a very valuable tool for studying the underlying thermal transport processes, which are important in nature and in many technical applications. With our study we aim at bridging this gap in the long run by combining Tomographic Particle Image Velocimetry (Tomo-PIV) with liquid crystal thermometry. As a first step towards this goal, we applied Tomo-PIV to Rayleigh-Bénard convection (RBC) of water in a cubic sample to obtain the instantaneous three-dimensional velocity field at Ra= 1.0 · 10^10 and Pr= 6.9. A comparison of the measured large-scale circulation with results from direct numerical simulations (DNS) and planar PIV measurements demonstrates the reliability of the Tomo-PIV technique. This is a prerequisite for employing Thermochromic Liquid Crystals (TLC) as tracer particles.

Item URL in elib:https://elib.dlr.de/78487/
Document Type:Contribution to a Collection
Additional Information:DOI: 10.1007/978-3-319-03158-3_53, Online ISBN: 978-3-319-03158-3, ISSN 1860-0824 (electronic), Library of Congress Control Number: 2013957123
Title:Towards the Combination of Thermochromic Liquid Crystals and Tomographic Particle Image Velocimetry
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schiepel, Danieldaniel.schiepel (at) dlr.deUNSPECIFIED
Bosbach, Johannesjohannes.bosbach (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics IX
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:124
Page Range:pp. 525-533
Editors:
EditorsEmail
Dillmann, AndreasDLR
Heller, GerdAirbus Deutschland
Krämer, EwaldUni Stuttgart
Kreplin, Hans-PeterDLR
Nitsche, WolfgangTU Berlin
Rist, UlrichUni Stuttgart
Publisher:Springer Verlag, Cham Heidelberg New York Dordrecht London
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-319-03157-6
Status:Published
Keywords:Rayleigh Benard Convection, Tomo-PIV
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 - Project Next Generation Train II (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Micknaus, Ilka
Deposited On:31 Mar 2014 14:54
Last Modified:31 Mar 2014 14:54

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