Air at 0ºC blows across a 3 cm diamter power cable at 20 m/s. If the outside surface of the cable is 50ºC, estimate (a) the heat transfer per unit length and (b) the Drag force in Newtons per meter length of cable.
What will be an ideal response?
The heat transfer is predicted by using Equation 4-128 with Table 4-4. The propererties of air are read from Appendix Table B.4 and then the Reynolds number is
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