How can I plot vorticity contour in CFD post

- June 3, 2020 at 4:47 am
  
  SHALINI
  Subscriber
  
  Hello everyone,
  
  I want to plot vorticity contour to visualize the blade tip vortices of NREL phase VI wind turbine blade. I tried to plot velocity curl contour on the plane generated behind the blade at tip but this was not successful. Could someone please help me regarding to plot vorticity contour.
  
  I will be very grateful.
- June 9, 2020 at 12:27 pm
  
  Karthik Remella
  Administrator
  
  Please use the Custom Field Functions in Fluent to plot vorticity. You should be able to choose the first derivatives as input fields.
  
  Define -> Custom Field Functions
  
  From the drop-down, please pick 'Derivatives' and select 'dY-Velocity/dx'. Hit 'Select'. Add the '-' (minus) sign and then pick the other derivative 'dX-Velocity/dy'. This would be the definition in 2D. If you are running a 3D simulation, please create the function using the appropriate definition and you should be able to plot a contour using these Custom Field Functions.
  
  I hope this helps.
  
  Thanks.
  
  Karthik