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 forced oscillation frequency and Reynolds number 1100, 3500) is covered in water 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.
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Experimental Study of Heat Convection From Stationary and Oscillating Circular Cylinder in Cross Flow
H. G. Park,
H. G. Park
Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA 91109
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Morteza Gharib
Morteza Gharib
Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125
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H. G. Park
Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA 91109
Morteza Gharib
Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125
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.
J. Heat Transfer. Feb 2001, 123(1): 51-62 (12 pages)
Published Online: May 17, 2000
Article history
Received:
January 3, 2000
Revised:
May 17, 2000
Citation
Park, H. G., and Gharib, M. (May 17, 2000). "Experimental Study of Heat Convection From Stationary and Oscillating Circular Cylinder in Cross Flow ." ASME. J. Heat Transfer. February 2001; 123(1): 51–62. https://doi.org/10.1115/1.1338137
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