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Measurements of average heat-transfer and friction coefficients for subsonic flow of air in smooth tubes at high surface and fluid temperaturesAn investigation of forced-convection heat transfer and associated pressure drops was conducted with air flowing through smooth tubes for an over-all range of surface temperature from 535 degrees to 3050 degrees r, inlet-air temperature from 535 degrees to 1500 degrees r, Reynolds number up to 500,000, exit Mach number up to 1, heat flux up to 150,000 btu per hour per square foot, length-diameter ratio from 30 to 120, and three entrance configurations. Most of the data are for heat addition to the air; a few results are included for cooling of the air. The over-all range of surface-to-air temperature ratio was from 0.46 to 3.5.
Document ID
19930092075
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Humble, Leroy V
Lowdermilk, Warren H
Desmon, Leland G
Date Acquired
September 6, 2013
Publication Date
January 1, 1951
Report/Patent Number
NACA-TR-1020
Accession Number
93R21365
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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