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Temperature gradients in turbulent gas streams: Investigation of the limiting value of total prandtl number
Author(s) -
Chia WuSun,
Sage B. H.
Publication year - 1970
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690160109
Subject(s) - prandtl number , reynolds number , turbulent prandtl number , turbulence , mechanics , thermodynamics , mathematics , schmidt number , physics , chemistry , nusselt number , heat transfer
Measurements of the total viscosity and total conductivity were made as a function of position and Reynolds number for the flow of air between two parallel plates with a separation of approximately 0.7 in. The temperature of the upper plate was 130.0°F. and that of the lower plate 70.0°F. The investigations were carried out at Reynolds numbers from 40,000 to 100,000 and were in good agreement with earlier data obtained at Reynolds numbers up to 40,000. The results obtained indicate little change in the total Prandtl number with increasing Reynolds number from the value of the molecular Prandtl number.