Q1 Confirm/predict the behavior of the convective (velocity) field given by the potential solution and its influence on the problem for different values of the Peclet number.
Q2 How does the Peclet number influence the average temperature computed as output? How does the thickness of the "high gradient temperature layer" near the cylinder surface affect the average temperature computed as output?
Q3 It is a useful exercise to try to estimate the behavior of the system in the "steady state" and its solution at regime. Is it possible to see and reproduce the solution in the steady state? And for what Peclet numbers?