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RESEARCH PAPERS

Internal Low Reynolds-Number Turbulent and Transitional Gas Flow With Heat Transfer

[+] Author and Article Information
D. M. McEligot, L. W. Ormand, H. C. Perkins

Aerospace and Mechanical Engineering Department, The University of Arizona, Tucson, Ariz.

J. Heat Transfer 88(2), 239-245 (May 01, 1966) (7 pages) doi:10.1115/1.3691521 History: Received March 11, 1965

Abstract

The results of a semitheoretical and experimental investigation of the heat-transfer and frictional effects in air, nitrogen, and helium in steady flow in the downstream region of round tubes are presented. The constant-properties analysis for low Reynolds-number turbulent flow is evolved from an improved description of the adiabatic velocity profile, without modifying the Reynolds analogy assumption of equal eddy diffusivities. Data cover peak wall-to-bulk temperature ratios from near unity to 4.8 and entering Reynolds numbers from 1450 to 45,000. Low and moderate temperature-ratio data are used to confirm and to extend the analysis, while high temperature-ratio results are utilized for classification of flow regimes at high heating rates in the low Reynolds-number range.

Copyright © 1966 by ASME
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