The Nonlinear Increase of Nusselt Number With Friction Factor in Fully Developed Laminar Duct Flow-Reference-Cited by-同舟云学术

The Nonlinear Increase of Nusselt Number With Friction Factor in Fully Developed Laminar Duct Flow

Published:2004-10-01 Issue:5 Volume:126 Page:840-842
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Van den Bulck E.¹

Affiliation:

1. Department of Mechanical Engineering, Katholieke Universiteit Leuven, Celestijnenlaan 300A, B-3001 Heverlee, Belgium

Abstract

This paper deals with heat transfer in fully developed laminar flow in cylindrical ducts. For this type of flow, the product of friction factor with Reynolds number f Re and the Nusselt number are both constants. It is known that the Nusselt number increases with the shift of boundary condition from constant wall temperature to constant heat flux. Also, the ratio of the Nusselt number to f Re increases when the convexity of the duct is reduced, e.g., a cylinder visavis parallel plates. This paper gives a simple physical explanation for these two phenomenona.

Publisher

ASME International

Subject

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

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/126/5/840/5914296/840_1.pdf

Reference5 articles.

1. Kays, W. M., and Crawford, M. E., 1980, Convective Heat and Mass Transfer, 2nd ed. McGraw-Hill Book Company, New York, Chap. 6.

2. Bejan, A., 1984, Convection Heat Transfer, John Whiley & Sons, New York, Chap. 3.

3. Kakac¸, S., Shah, R. K., and Aung, W., 1987, Handbook of Single-Phase Convective Heat Transfer, John Wiley & Sons, New York, Chap. 3.

4. Kays, W. M., and London, A. L., 1984, Compact Heat Exchangers, 3rd ed., Chap. 6, Fig. 6.

5. Incropera, F. P., and De Witt, D. P., Fundamentals of Heat and Mass Transfer, 3rd ed., Chap. 8.

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