Thank you for the answers. 

  1. Could you specify the chapter that explains more about Morsi-Alexxander drag law? Because in chapter 12.3.1 it does not specify anything about the abovementioned drag law, it only gives the formula.
  2. I dont understand what do you mean by will take care since the are no coefficients (no function) for Reynolds numbers above 50000, as you can see in the picture attached. Or may I understood something wrong?

Thank you in advance