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The optimal spacing of cylinders in free-stream cross-flow forced convection

Publication ,  Journal Article
Stanescu, G; Fowler, AJ; Bejan, A
Published in: International Journal of Heat and Mass Transfer
January 1, 1996

This is an experimental, numerical and analytical study of the optimal spacing between cylinders in cross-flow forced convection. The cylinder array occupies a fixed volume and is exposed to a free stream of given velocity and temperature. The optimal cylinder-to-cylinder spacing is determined by maximizing the overall thermal conductance between all the cylinders and the free stream. In the first part, the optimal spacing and corresponding maximum thermal conductance are determined based on experiments with forced air for H/D = 6.2 and in the ReD range 50-4000, where ReD is based on the free-stream approach velocity and cylinder diameter D, and H is the array length in the flow direction. In the second part, similar results are developed based on numerical simulations for Pr = 0.72, 10 ≤ H/D ≤ 20 and 40 ≤ ReD ≤ 200. In the concluding section, the experimental and numerical results for optimal spacing and maximum thermal conductance are explained and correlated analytically by intersecting the small-spacing and large-spacing asymptotes of the thermal conductance function.

Duke Scholars

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 1, 1996

Volume

39

Issue

2

Start / End Page

311 / 317

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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Stanescu, G., Fowler, A. J., & Bejan, A. (1996). The optimal spacing of cylinders in free-stream cross-flow forced convection. International Journal of Heat and Mass Transfer, 39(2), 311–317. https://doi.org/10.1016/0017-9310(95)00122-P
Stanescu, G., A. J. Fowler, and A. Bejan. “The optimal spacing of cylinders in free-stream cross-flow forced convection.” International Journal of Heat and Mass Transfer 39, no. 2 (January 1, 1996): 311–17. https://doi.org/10.1016/0017-9310(95)00122-P.
Stanescu G, Fowler AJ, Bejan A. The optimal spacing of cylinders in free-stream cross-flow forced convection. International Journal of Heat and Mass Transfer. 1996 Jan 1;39(2):311–7.
Stanescu, G., et al. “The optimal spacing of cylinders in free-stream cross-flow forced convection.” International Journal of Heat and Mass Transfer, vol. 39, no. 2, Jan. 1996, pp. 311–17. Scopus, doi:10.1016/0017-9310(95)00122-P.
Stanescu G, Fowler AJ, Bejan A. The optimal spacing of cylinders in free-stream cross-flow forced convection. International Journal of Heat and Mass Transfer. 1996 Jan 1;39(2):311–317.
Journal cover image

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 1, 1996

Volume

39

Issue

2

Start / End Page

311 / 317

Related Subject Headings

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