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!

*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.

Jobs

Thumb rule for surge pressure calculation

Thumb rule for surge pressure calculation

(OP)
Hi could any tell, how to quickly approximate surge pressure due to valve closing or pump stoppage?

Also I want to know if the surge pressure be more than pump dead head pressure due transients repetitions?

Thanks a lot !

RE: Thumb rule for surge pressure calculation

Nobody answered so here's a shot from the building industry. During a fire hydrant test, the hydrant valve stem failed and the valve slammed shut. The resulting (what we call) water hammer, caused an 8 inch sprinkler main in an adjacent building to drive itself and attached sprinkler laterals right out the end of the building. It was a wet system and system pressure could never approach that. A truly fantastic sight!

RE: Thumb rule for surge pressure calculation

Use the Joukowsky equation - assume the flow is instantaneously stopped.

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


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