Accession Number:

AD0692716

Title:

DISCRETE FLOW RATES OF THE HELIUM FILM,

Descriptive Note:

Corporate Author:

ROYAL MILITARY COLL OF CANADA KINGSTON (ONTARIO) DEPT OF PHYSICS

Personal Author(s):

Report Date:

1967-11-30

Pagination or Media Count:

4.0

Abstract:

Measurements of the helium-film flow rates over a stainless steel substrate have been made using the heat-transport method of Bowers, Brewer, and Mendelssohn. The moving film from a reservoir is vaporized inside a copper box at the top of the stainless steel capillary in a closed system, by electrical heating. The vapor recondenses in the isothermal reservoir. On any days run, the rate was constant and reproducible to within 1. The complete range of flow rates observed at 1.2 degrees K on separate days was about 50. Seven discrete rates were in fact observed in 18 runs nearly equally spaced at intervals of 0.0000083 sq cmsec. At present, no theory predicts discrete flow rates. Author

Subject Categories:

  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE