high Icing extension with intermittency model

- September 23, 2020 at 11:19 am
  
  muath
  Subscriber
  
  Hello everybody
  I have a problem when I use the high roughness (icing) model instead of standard one. I am simulating 2D flow on rough flat plate the roughness are given as an equivalent sand grain roughness profile.
  the problem that I am getting this massage
  wall_transition_coeffs: Unknown bc type
  Internal error at line 3000 in file 'turbulencesg_ke.c' on Node 6
  and the solution goes very slow. when i use the standard roughness model i have no problem or when I disable the intermittency equation.
  will be great if someone helped me with this issue.
  thx
- September 28, 2020 at 2:20 pm
  
  Konstantin
  Ansys Employee
  
  Hello According to Sec. 7.4.15.2.8.2. "Additional Roughness Models for Icing Simulations" of Fluent 2020 User Guide, the high roughness model is compatible only with Spalart-Allmara and SST k-w. it is not compatible with transitions models