0
RESEARCH PAPERS

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

[+] Author and Article Information
W. W. Yousef

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

J. D. Tarasuk

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

J. Heat Transfer 104(1), 145-152 (Feb 01, 1982) (8 pages) doi:10.1115/1.3245042 History: Received February 12, 1981; Online October 20, 2009

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.

Copyright © 1982 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In