×
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

Pressure through pipe orifice

Pressure through pipe orifice

Pressure through pipe orifice

(OP)
Hello,

I am looked for resistance coef (k) values for calculating pressure of a hole in the wall of a pipe.  Is this the same as k values for an orifice in a pipe? This is for a design of cooling spray around a shaft.  The cooling water will be directed through a circular pipe around the shaft with orifice holes in the pipe spraying the water into the shaft bearing.  I need to calculate the pressure through the orifice. Any help is appretiated.

Thanks

Travis

RE: Pressure through pipe orifice

My old design manual says pressure drop through a distributor pipe (pipe with holes in it) is about 2.8 velocity heads based on the orifice velocity.

If the total flow thru the holes gives significant pressure drop along the distributor pipe, you'll have to iterate to get a good supply pressure for the orifices.

Good luck,
Latexman

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