Transition or Turbulence Model?

- July 3, 2018 at 10:13 pm
  
  José Mantovani
  Subscriber
  
  Hello everyone!
  
  I'm setting up my 2D simulation process for aerodynamic profile, and thinking about the turbulence model I came across a question. The conditions are as follows:
  
  U = 12 m / s
  
  c (chord length) = 0.575 m
  
  operating at Standard air 20 ° C
  
  And calculating the Reynolds number for this flow, Re = 470000.
  
  So I decided to use SA turbulence model, k-epsilon Realizable and SST k-omega.
  
  According to the literature, for external flows, around a Reynolds number of 500000 we have a turbulent flow.
  
  So, it gave me a doubt, which would be more correct: to use these models in which I quoted or some model of transition?
  
  Thanks for opportunity!
  
  Mantovani.
- July 4, 2018 at 7:21 am
  
  Amine Ben Hadj Ali
  Ansys Employee
  
  Hi,
  
  I recommend carry out a sensitivity analysis an compare the results to a transition model. You can start by using the intermittency transition model (3-Eqn model)
  
  A.