×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Jobs

Corrected compressor air flow (turbo)

Corrected compressor air flow (turbo)

RE: Corrected compressor air flow (turbo)

(OP)
thanks cobra, do you know where in the inlet, impeller inducer (small diameter), or in the inlet pipe to the turbo (big diameter), the flow is corrected? theres a big diference in pressure/temperature between the two.
the turbo is going to be restricted, so atmosfere conditions can not be used  

RE: Corrected compressor air flow (turbo)

I believe they are referring to the upstream stagnation pressure (Po) and temperature (To), which is what you would measure.  The effects of a restriction are then taken into account by the scaling.  This is evidenced by the scaling of Po/√To, (instead of P/T), which as you know follows directly from the expression for steady-state compressible flow through a restriction.  This is similar to what is done to compute the air density correction factors for power as used for dynamometer measurements, and is what makes sense to me anyway.  One could always call them or send an e-mail if in doubt, however.  I'm sure they'd be willing to help you.

Best regards

RE: Corrected compressor air flow (turbo)

(OP)
Yeah i guess they should know better than anyone, but the Po and To you mention seem correct (im still walking my first steps in compresible flow...) thanks for your help again.

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!


Resources