Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Print: 2152-5102
ISSN Online: 2152-5110

Volumes:
Volume 47, 2020 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.i4-6.380
pages 865-877

On the Application of a Laser Specklegram Technique for Convective Heat Transfer Problems

Kenneth D. Kihm
Texas A&M University College Station, TX; and Micro/Nano-Scale Fluidics and Energy Transport Laboratory, University of Tennessee, Mechanical, Aerospace and Biomedical Engineering Department, Knoxville TN 37996-2210, USA

ABSTRACT

A laser specklegram technique has been developed and applied to directly measure the wall temperature gradient for convective heat transfer problems. This relatively new technique has several advantages for heat convection measurements over conventional techniques, which usually require laborious corrections to account for the radiation and conduction heat losses. The specklegram technique provides extremely high resolution for the evaluation of local quantities, and full-field information can be obtained by photographically recording a single specklegram. Satisfactory measurement accuracy of the technique has been demonstrated when applied to a thermal layer along a vertical isothermal wall and a vertical channel flow between parallel isothermal channel. The technique has also been used to investigate a new problem: the dependence of heat transfer characteristics of converging channel flows on different inclination angles. The optimal exit opening ratio of the converging channel, (b/L)opt corresponding to maximum NuL is determined as 0.07, 0.1, 0.3, 0.35, and 0.4 for each of 0, 15, 30, 45 and 60° inclination angles measured from the vertical.


Articles with similar content:

ON THE APPLICATION OF A LASER SPECKLEGRAM TECHNIQUE FOR CONVECTIVE HEAT TRANSFER PROBLEMS
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
Kenneth D. Kihm
NATURAL CONVECTION IN DOUBLY INCLINED RECTANGULAR BOXES
International Heat Transfer Conference 6, Vol.2, 1978, issue
Hiroyuki Ozoe, T. Okamoto, Stuart W. Churchill, H. Sayama
HEAT TRANSFER TO A FLAT PLATE SUBMERGED IN A SPOUTED BED
International Heat Transfer Conference 10, Vol.13, 1994, issue
Jan Stasiek, M.W. Collins , A. Szajner
MEASUREMENTS OF LOCAL MASS TRANSFER COEFFICIENTS AND PRESSURE DISTRIBUTION ALONG THE SHELL-SIDE OF OVAL-SHAPED TUBES IN CROSS FLOW HEAT EXCHANGERS
International Heat Transfer Conference 8, Vol.6, 1986, issue
H. Hanke, G. P. Merker
Enhanced Forced Convection in Triangular Ducts by Roughened Surface
International Heat Transfer Conference 11, Vol.13, 1998, issue
C. W. Leung, H. J. Kang, T. T. Wong