13 November 2018
1/Please generate fully developed profile by assuming periodicity for your tube.
2/Actually almost all turbulence models obeying a simple formalism like the Boussinessq approach will predict good results whenever the flow is fully developed. Enhancement can be done through some advanced models or by changing the formalism.
3/Form the experiment it is said 15 m/s but perhaps they are talking about the bulk and not providing any information about the inflow regions (disturbances, fluctuations). As someone who has done some experiments, I have seen runs done without flow straightener...without mentioning that in papers and books.
4/SST model is fine. Same applies for Realizable with EWT or Menter et. al.
5/Summarize all work and write your report: All results are good to be reported if they are well documented.