1. (8) Rec= 20901^ | (9)
2. f F Val = 0.758- 0.0109 -
3. Flam=1.5-1.9r+1.96r2-0.71r3(16) for laminar flow and
4. Nu= 1.18135+ 2.30595r0403245(24) where the ratio r is defined in equation (18). For turbulent flow, the Nusselt number is calculated using the following empirical correlation
5. /PrRe max(pr2/3,(l.07-12.7>///8(Pr2/3-l)J&L