Chapter 1, Problem 1.19P

Air at 40°C flows over a long, 25-mm-diameter cylinderwith an embedded electrical heater. In a series of tests,measurements were made of the power per unit length, $P^{\prime }$ , required to maintain the cylinder surface temperature at 300°C for different tree stream velocities V of theair. The results are as follows:

(a) Determine the convection coefficient for eachvelocity, and display your results graphically.
(b) Assuming the dependence of the convection coefficient on the velocity to be of the form $h=C{V}^n,$ determine the parameters C and n from the resultsof part (a).