Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
THE ENHANCEMENT EFFECTS OF A PLUME OF RISING BUBBLES ON NATURAL CONVECTION FROM A HEATED VERTICAL PLATE
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RESUMO
Rising bubbles have been found to significantly enhance heat transfer from a heated surface. This is associated with the bubble acting like a bluff body, displacing fluid as it moves, and also via the wake generated by the bubble, which increases fluid mixing. The present research explores the motion of both a single ellipsoidal bubble and a plume of rising bubbles and their influence on heat transfer from a heated vertical surface. Prior to this, the effect on heat transfer of a stream of bubbles rising past a vertical surface has received little attention. By simultaneously measuring the time varying heat transfer via a hot film sensor and the bubble dynamics by means of high speed cameras, an improved understanding of the heat transfer mechanism is achieved. It was found that a bubble mean path normal to the heated surface produced higher initial enhancements in heat transfer when compared to bubble motion in a plane parallel to the surface, although this effect was insignificant when a plume of bubbles was investigated.
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Donoghue David B, Delauré Yan M C, Albadawi Abdulaleem, Robinson Anthony J, Murray Darina B, Bouncing bubble dynamics and associated enhancement of heat transfer, Journal of Physics: Conference Series, 395, 2012. Crossref
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Donoghue D.B., Albadawi A., Delauré Y.M.C., Robinson A.J., Murray D.B., Bubble impingement and the mechanisms of heat transfer, International Journal of Heat and Mass Transfer, 71, 2014. Crossref
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Donnelly B., O’Reilly Meehan R., Nolan K., Murray D.B., The dynamics of sliding air bubbles and the effects on surface heat transfer, International Journal of Heat and Mass Transfer, 91, 2015. Crossref
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Baczyzmalski Dominik, Weier Tom, Kähler Christian J., Cierpka Christian, Near-wall measurements of the bubble- and Lorentz-force-driven convection at gas-evolving electrodes, Experiments in Fluids, 56, 8, 2015. Crossref
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Meehan O'Reilly, Donnelly B, Persoons T, Nolan K, Murray D B, Forced convection in the wakes of sliding bubbles, Journal of Physics: Conference Series, 745, 2016. Crossref
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Donoghue D. B., Albadawi A., Delauré Y. M. C., Robinson A. J., Murray D. B., Mechanisms of heat transfer for axisymmetric bubble impingement and rebound, Heat and Mass Transfer, 54, 8, 2018. Crossref
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O’Reilly Meehan R., Williams N. P., Donnelly B., Persoons T., Nolan K., Murray D. B., Forced convection in the wakes of impacting and sliding bubbles, Heat and Mass Transfer, 54, 8, 2018. Crossref
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O'Reilly Meehan R., Grennan K., Davis I., Nolan K., Murray D. B., Visualization of the wake behind a sliding bubble, Physical Review Fluids, 2, 10, 2017. Crossref
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Larimi M.M., Ramiar A., Two-dimensional bubble rising through quiescent and non-quiescent fluid: Influence on heat transfer and flow behavior, International Journal of Thermal Sciences, 131, 2018. Crossref