Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Vortex distribution for axial flow machines

Vortex distribution for axial flow machines

Vortex distribution for axial flow machines


Axial flow machines (compressors, turbines, fans) may be designed for a number of vortex distributions such as free vortex and forced vortex. In "Fluid mechanics and thermodynamics of turbomachinery" by S. L. Dixon another distribution is suggested that results from a constant specific massflow assumption.
As I understand it, free vortex means the axial vorticity component is zero or in other words, the axial flow velocity is the same for all stream lines. Is my understanding correct?

For the free vortex case it seems obvious that the distribution applies to the flow at the inlet and at the outlet of the rotor, however for other distributions it's unclear to me.

Is it true that for whatever vortex distibution you design for:
a) this distribution applies to both the inlet and outlet of the rotor?
b) it is reasonable to assume that the axial velocity along each stream line is more or less the same at the inlet and outlet of the rotor?


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close