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Constructal flow orientation in conjugate cooling channels with internal heat generation

Publication ,  Journal Article
Bello-Ochende, T; Olakoyejo, OT; Meyer, JP; Bejan, A; Lorente, S
Published in: International Journal of Heat and Mass Transfer
January 15, 2013

This paper presents the development of the three-dimensional flow architecture of conjugate cooling channels in forced convection with internal heat generation within the solid for an array of circular cooling channels with different flow orientation. Three flow orientations were studied: array of channels with parallel flow; array of channels in which the flow in every second row is in a counter direction with its neighbours, and flows in all the arrays of channels are in counter flow relative to each other. The geometric configurations were determined in such a way that the peak temperature was minimised subject to the constraint of fixed global volume of solid material. The degrees of freedom of the design were hydraulic diameter and channel to channel spacing. A gradient-based optimisation algorithm was applied to search for the best optimal geometric configurations that improve thermal performance by minimising thermal resistance for a wide range of dimensionless pressure differences. The effect of porosities, applied pressure difference, flow orientation and heat generation rate on the optimal hydraulic diameter and channel to channel spacing is reported. The results show that the effects of dimensionless pressure drop on minimum thermal resistance were consistent with those obtained in the open literature. © 2012 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 15, 2013

Volume

57

Issue

1

Start / End Page

241 / 249

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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ICMJE
MLA
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Bello-Ochende, T., Olakoyejo, O. T., Meyer, J. P., Bejan, A., & Lorente, S. (2013). Constructal flow orientation in conjugate cooling channels with internal heat generation. International Journal of Heat and Mass Transfer, 57(1), 241–249. https://doi.org/10.1016/j.ijheatmasstransfer.2012.10.021
Bello-Ochende, T., O. T. Olakoyejo, J. P. Meyer, A. Bejan, and S. Lorente. “Constructal flow orientation in conjugate cooling channels with internal heat generation.” International Journal of Heat and Mass Transfer 57, no. 1 (January 15, 2013): 241–49. https://doi.org/10.1016/j.ijheatmasstransfer.2012.10.021.
Bello-Ochende T, Olakoyejo OT, Meyer JP, Bejan A, Lorente S. Constructal flow orientation in conjugate cooling channels with internal heat generation. International Journal of Heat and Mass Transfer. 2013 Jan 15;57(1):241–9.
Bello-Ochende, T., et al. “Constructal flow orientation in conjugate cooling channels with internal heat generation.” International Journal of Heat and Mass Transfer, vol. 57, no. 1, Jan. 2013, pp. 241–49. Scopus, doi:10.1016/j.ijheatmasstransfer.2012.10.021.
Bello-Ochende T, Olakoyejo OT, Meyer JP, Bejan A, Lorente S. Constructal flow orientation in conjugate cooling channels with internal heat generation. International Journal of Heat and Mass Transfer. 2013 Jan 15;57(1):241–249.
Journal cover image

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 15, 2013

Volume

57

Issue

1

Start / End Page

241 / 249

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences