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RESEARCH PAPERS

Transient Forced Convection Heat Transfer to Helium During a Step in Heat Flux

[+] Author and Article Information
P. J. Giarratano, W. G. Steward

Thermophysical Properties Division, National Engineering Laboratory, National Bureau of Standards, Boulder, Colo. 80303

J. Heat Transfer 105(2), 350-357 (May 01, 1983) (8 pages) doi:10.1115/1.3245585 History: Received March 15, 1982; Online October 20, 2009

Abstract

Transient forced convection heat transfer coefficients for both subcritical and supercritical helium in a rectangular flow channel heated on one side were measured during the application of a step in heat flux. Zero flow data were also obtained. The heater surface which served simultaneously as a thermometer was a fast response carbon film. Operating conditions covered the following range: Pressure, 1.0 × 105 Pa (1 bar) to 1.0 × 106 Pa (10 bar); Temperature, 4 K–10 K; Heat Flux, 0.1 W/cm2 −10 W/cm2 ; Reynolds number, 0–8 × 105 . The experimental data and a predictive correlation are presented.

Copyright © 1983 by ASME
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