Free Convection Effects on Laminar Forced Convective Heat Transfer in a Horizontal Isothermal Tube-Reference-Cited by-同舟云学术

Free Convection Effects on Laminar Forced Convective Heat Transfer in a Horizontal Isothermal Tube

Published:1982-02-01 Issue:1 Volume:104 Page:145-152
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Yousef W. W.¹,Tarasuk J. D.²

Affiliation:

1. Nuclear Studies and Safety Department, Ontario Hydro, Toronto, Ontario, Canada M5G 1X6

2. The University of Western Ontario, London, Ontario, Canada N6A 5B9

Abstract

The influence of free convection due to buoyancy on forced laminar flow of air in the entrance region of a horizontal isothermal tube was investigated. The Graetz numbers ranged form 2.5 to 110.0, the Reynolds numbers ranged from 120 to 1200, the Grashof numbers ranged from 0.8 × 104 to 8.7 × 104, and the ratio L/D was varied from 6 up to 46. The average Nusselt numbers based on the log-mean temperature difference, ranged from 2.0 to 25.9. The heat transfer data were correlated according to the influence of free convection which was found to have a significant effect at points close to the entrance to the tube.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/104/1/145/5909747/145_1.pdf

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