A flow of air at 27C and 1 atm is hydrodynamically fully developed in a 1c I.D pipe with uav=2m/s. Plot(to scale) Tw,Tb, qw as a function of the distance x after Tw is changed or qw is imposed.
a) in the case for which Tw=68.4 C = constant
b) in the case for which qw=378 w/m^2 = constant
Indicate x(et) on your graphs.