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Experimental Study of Heat Convection From Stationary and Oscillating Circular Cylinder in Cross Flow

Park, H. G. and Gharib, Morteza (2001) Experimental Study of Heat Convection From Stationary and Oscillating Circular Cylinder in Cross Flow. Journal of Heat Transfer, 123 (1). pp. 51-62. ISSN 0022-1481. https://resolver.caltech.edu/CaltechAUTHORS:20130911-135430530

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Abstract

An experimental study is made on the processes of heat transfer from the surface of a forced oscillating cylinder in a crossflow. A range of oscillation amplitude (A/D =0.1,0.2), forced oscillation frequency (0<St_c<1), and Reynolds number (Re=550, 1100, 3500) is covered in water (Pr=6). Besides the increase at the natural vortex shedding frequency, large increases in the heat transfer are found at certain superharmonics. By using Digital Particle Image Velocimetry/Thermometry (DPIV/T), the increase in the heat transfer rate is found to correlate inversely with the distance at which vortices roll-up behind the cylinder, i.e., the distance decreases when the heat transfer increases. The cause of the increase is found to be the removal of the stagnant and low heat convecting fluid at the base of the cylinder during the roll-up of the vortices.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1115/1.1338137 DOIArticle
http://heattransfer.asmedigitalcollection.asme.org/article.aspx?articleid=1444628PublisherArticle
Additional Information:© 2001 by ASME. Contributed by the Heat Transfer Division for publication in the Journal of Heat Transfer. Manuscript received by the Heat Transfer Division January 3, 2000; revision received, May 17, 2000. Associate Editor: Bau. We thank David Jeon and Dr. Flavio Noca for their generous help. This research was supported by NSF Grant CTS-9418973.
Group:GALCIT
Funders:
Funding AgencyGrant Number
NSFCTS-9418973
Subject Keywords:Convection, Cooling, Cylinder, Enhancement, Entrainment, Experimental, Fluids, Forced Convection, Heat Transfer, Heat Exchangers, Image Processing, Nonintrusive Diagnostics, Recirculating, Separated, Surface, Temperature, Thermal, Unsteady, Vibrating, Vortex, Wakes
Issue or Number:1
Record Number:CaltechAUTHORS:20130911-135430530
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130911-135430530
Official Citation:Park HG, Gharib M. Experimental Study of Heat Convection From Stationary and Oscillating Circular Cylinder in Cross Flow. J. Heat Transfer. 2000;123(1):51-62. doi:10.1115/1.1338137
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41254
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Sep 2013 21:34
Last Modified:03 Oct 2019 05:47

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