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The solution of the laminar-boundary-layer equation for the flat plate for velocity and temperature fields for variable physical properties and for the diffusion field at high concentrationIn connection with Pohlhausen's solution for the temperature field on the flat plate, a series of formulas were indicated by means of which the velocity and temperature field for variable physical characteristics can be computed by an integral equation and an iteration method based on it. With it, the following cases were solved: On the assumption that the viscosity simply varies with the temperature while the other fluid properties remain constant, the velocity and temperature field on the heated and cooled plate, respectively, was computed at the Prandtl numbers 12.5 and 100 (viscous fluids). A closer study of these two cases resulted in general relations: The calculations for a gas of Pr number 0.7 (air) were conducted on the assumption that all fluid properties vary with the temperature, and the velocities are low enough for the heat of friction to be discounted. The result was a thickening of the boundary layers, but no appreciable modification in shearing stress or heat-transfer coefficient.
Document ID
19930093950
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Schuh, H
Date Acquired
August 16, 2013
Publication Date
May 1, 1950
Report/Patent Number
NACA-TM-1275
Accession Number
93R23276
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
BOUNDARY LAYER, LAMINAR - PLATES, FLAT
BOUNDARY LAYER - TEMPERATURE DISTRIBUTION
EQUATIONS - BOUNDARY LAYER
BOUNDARY LAYER - VELOCITY DISTRIBUTION

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