Computation of Free Convective Nusselt Number from Horizontal Cylinders Using Semi-Empirical Relationships
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064



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Research Paper | Material Science | Nigeria | Volume 6 Issue 10, October 2017

Computation of Free Convective Nusselt Number from Horizontal Cylinders Using Semi-Empirical Relationships

B. S. Mbang, M. F. Haque

Natural convective heat transfer from a horizontal cylinder in gases is theoretically studied. A test cylinder of length 20cm is used. A thin wire runs coaxially in the cylinders of varied diameter of 0.01 to 0.03mm and is maintained at a constant temperature of 540C by an electric current. The wire is exposed progressively to air, argon, carbon dioxide, nitrogen and oxygen at atmospheric pressure and at 230C. On a logarithmic scale, the Nusselt number is plotted against the Raleigh number using five traditional correlations, Morgan, Kyte et al, Chu and Churchill, Kuehn and Goldstein, and Raithby and Holland. A new correlation relation is developed which agrees well with the basis Kyte et al experimental.

Keywords: Nusselt number, Raleigh number, Grashof number, heat transfer

Edition: Volume 6 Issue 10, October 2017

Pages: 1078 - 1081

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How to Cite this Article?

B. S. Mbang, M. F. Haque, "Computation of Free Convective Nusselt Number from Horizontal Cylinders Using Semi-Empirical Relationships", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=29091717, Volume 6 Issue 10, October 2017, 1078 - 1081

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