KNOWN: Speed and temperature of atmospheric air flowing over a flat plate of prescribed
length and temperature.
FIND: Rate of heat transfer corresponding to Rex,c = 10 , 5 10 and 10 .
ASSUMPTIONS: (1) Flow over top and bottom
KNOWN: Laminar boundary layer flow of air at 20C and 1 atm having t = 1.13 .
FIND: Ratio / t when fluid is ethylene glycol for same conditions.
ASSUMPTIONS: (1) Laminar flow.
PROPERTIES: Table A-4, Air (293K, 1 atm): Pr = 0.709; Ta
KNOWN: Freestream velocity and average convection heat transfer associated with fluid
flow over a surface of prescribed characteristic length.
FIND: Values of Nu L , ReL , Pr, jH for (a) air, (b) engine oil, (c) mercury, (d) water.