Velocity Boundary Conditions

- July 9, 2018 at 2:25 pm
  
  krany3
  Subscriber
  
  What is the difference between swirl velocity and swirl angular velocity in Fluent terms? The Fluent user manual defines them differently. When I gave the values for both swirl(tangential) velocity and angular velocity, the swirl number got doubled. Technically, they should be same. How are they defined in Fluent? Can anyone explain?
- July 9, 2018 at 6:29 pm
  
  DrAmine
  Ansys Employee
  
  Hi,
  
  Refer to setting Angular Velocity from Fluent User's Guide. The swirl velocity due to your input of angular velocity will be added to the tangential component on top.
  
  A.
- July 10, 2018 at 2:11 am
  
  krany3
  Subscriber
  
  I got that. But, how is Fluent differentiating Tangential and Angular velocities! They both are dependent on each other.
- July 10, 2018 at 4:59 pm
  
  Karthik Remella
  Administrator
  
  Hello,
  
  Here is the snip from the Fluent Users guide.
  
  I hope these definitions bring some more clarity.
  
  Thank you.
  
  Best Regards,
  
  Karthik