The research described here is concerned with natural convection from isothermal cylinders, with a particular focus on the interaction between a pair of vertically aligned cylinders. Prime attention was focused on how the local heat transfer characteristics of the upper cylinder are affected due to buoyancy induced fluid flow from the lower cylinder. Tests were performed using internally heated copper cylinders with an outside diameter 30mm and a vertical separation distance between the cylinders ranging from two to three cylinder diameters. Plume interaction between the heated cylinders was investigated within a Rayleigh number range of 2×106 to 6×106. Spectral analysis of the associated heat transfer interaction is presented showing that interaction between the cylinders causes oscillation of the thermal plume. The effect of this oscillation is considered as a possible enhancement mechanism of the heat transfer performance of the upper cylinder.
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ASME 2009 International Mechanical Engineering Congress and Exposition
November 13–19, 2009
Lake Buena Vista, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4382-6
PROCEEDINGS PAPER
Natural Convection From Isothermal Horizontal Cylinders
Ian M. O. Gorman,
Ian M. O. Gorman
University of Dublin, Trinity College, Dublin, Ireland
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Darina B. Murray,
Darina B. Murray
University of Dublin, Trinity College, Dublin, Ireland
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Gerard Byrne,
Gerard Byrne
University of Dublin, Trinity College, Dublin, Ireland
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Tim Persoons
Tim Persoons
University of Dublin, Trinity College, Dublin, Ireland
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Ian M. O. Gorman
University of Dublin, Trinity College, Dublin, Ireland
Darina B. Murray
University of Dublin, Trinity College, Dublin, Ireland
Gerard Byrne
University of Dublin, Trinity College, Dublin, Ireland
Tim Persoons
University of Dublin, Trinity College, Dublin, Ireland
Paper No:
IMECE2009-11213, pp. 1891-1897; 7 pages
Published Online:
July 8, 2010
Citation
Gorman, IMO, Murray, DB, Byrne, G, & Persoons, T. "Natural Convection From Isothermal Horizontal Cylinders." Proceedings of the ASME 2009 International Mechanical Engineering Congress and Exposition. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C. Lake Buena Vista, Florida, USA. November 13–19, 2009. pp. 1891-1897. ASME. https://doi.org/10.1115/IMECE2009-11213
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