Question: 1. Consider laminar flow in a circular tube with a fully developed velocity profile. Let heat be added at a constant rate along the tube from x+ = 0 to X+ = 0.10. Thereafter let the tube surface be adiabatic. Calculate and plot the tube surface temperature as a function of x+.
2. Evaluate and plot both local and mean Nestlet numbers for fully developed laminar flow in a square tube. At what value of x+ does the local Nestlet. number come within two percent of the asymptotic value?