How to add roughness on a surface in Fluent?

- February 28, 2019 at 5:16 pm
  
  mutianzi1
  Subscriber
  
  Hello!
  
  Does anyone know how to add roughness on a surface or make the surface rougher in Fluent? This surface is shown below and is defined as no-slip wall in Fluent. Large eddy simulation is used to model turbulence.
  
  Thanks!
- February 28, 2019 at 7:22 pm
  
  Amine Ben Hadj Ali
  Ansys Employee
  
  Whenever you open wall boundary hit F1 then search after roughness. But this would not work for LES you need hybrid approach.
- February 28, 2019 at 8:08 pm
  
  mutianzi1
  Subscriber
  
  Hello Amine,
  
  Thanks for your reply. I am not familiar with hybrid approach. Do you have any references?
  
  Best regards!
- March 1, 2019 at 9:26 pm
  
  Amine Ben Hadj Ali
  Ansys Employee
  
  Check the scale resolving methods in the documentation. Moreover carry out a literature study on that.