An evaluation of four experimental methods for measuring mean properties of a supersonic turbulent boundary layer Page: 4 of 35
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NACA TN 3721
cv specific heat at constant volume, BTU/lb OF
H boundary-layer-shape parameter, -, dimensionless
Ik wire current, amp
M Mach number, u, dimensionless
p static pressure, lb/sq ft
Pt total pressure, lb/sq ft
q dynamic pressure, lb/sq ft
Re equilibrium resistance of wire with no current flow, ohms
Rw resistance of wire with current flow, ohms
R8 Reynolds number, , dimensionless
T static temperature, OR
Tt total temperature, OR
t time, sec
u velocity parallel to plate, ft/sec
x distance along plate from leading edge, ft
y distance normal to plate, ft
y ratio of specific heats, , dimensionless
8 boundary-layer thickness, ft
8" boundary-layer displacement thickness, ft
6 boundary-layer momentum thickness, ft
gr recovery factor, T - T dimensionless
, t "To
9 viscosity, lb-sec/sq ft
p mass density, slugs/cu ft
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Nothwang, George J. An evaluation of four experimental methods for measuring mean properties of a supersonic turbulent boundary layer, report, June 1956; (digital.library.unt.edu/ark:/67531/metadc55960/m1/4/: accessed January 16, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.