Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

Volumes:
Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.270
pages 753-762

The Use of Temperature Transients to Calculate the Thermal Diffusivity in Powders

Joe Deans
Department of Mechanical Engineering, University of Auckland, Auckland, New Zealand
J. Morrison
Department of Mechanical Engineering, University of Auckland, New Zealand
M. Alien
Department of Mechanical Engineering, University of Auckland, New Zealand

RESUMO

This paper describes the development of a quick and simple method which can be used to measure the thermal diffusivity of fine powders. The method is based on measuring and analyzing the phase lag which evolves in a cylindrical sample of powder subjected to an oscillating temperature wave originating at its axis. The variation of this phase lag with frequency has been analyzed using both an analytical solution and a finite difference model. The analytical solution is the quicker method but the finite difference method is considered to be the more accurate. There is, however good agreement in the values found from both solutions. These solutions were applied to the results obtained from tests on three powders and then-apparent Thermal Diffusivities are close to those predicted using other methods. As a comparison a test was performed and analyzed with the rig filled with paraffin wax and the value obtained is close to that published in the literature.


Articles with similar content:

THE USE OF TEMPERATURE TRANSIENTS TO CALCULATE THE THERMAL DIFFUSIVITY IN POWDERS
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
J. Morrison, Joe Deans, M. Allen
TRANSIENT RESPONSE OF A COMPOSITE HOLLOW CYLINDER HEATED BY A MOVING LINE SOURCE WITH HYPERBOLIC HEAT CONDUCTION EQUATION
International Heat Transfer Conference 8, Vol.2, 1986, issue
J. H. Tzou, H. S. Chu, J. M. Chen
HEAT TRANSFER IN FIXED BEDS OF PARTICLES AT LOW AND INTERMEDIATE REYNOLDS NUMBERS
International Heat Transfer Conference 6, Vol.4, 1978, issue
A.P. Wardle, D. J. Gunn, P.V. Narayanan
New Estimation Method Based on Integral Transforms for the Thermal Diffusivity Measurement of Anisotropic Materials
International Heat Transfer Conference 15, Vol.28, 2014, issue
Benjamin Remy, Alain Degiovanni, Mathieu Niezgoda, Christophe Rodiet
Experimental Study of Non-Fourier Thermal Response in Porous Media
Journal of Porous Media, Vol.8, 2005, issue 1
A Haji-Sheikh, A. G. Agwu Nnanna, K. T. Harris