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


Theory behind the Flowing fluid inside the pipe

Theory behind the Flowing fluid inside the pipe

Theory behind the Flowing fluid inside the pipe

pls, apology me to ask this kind of basic questions.
iam confused my self again..

When the water flowing inside the pipe what will be the pressure exerted by the flowing fluid?
I have known values of Size of the pipe, volumetric flow rate and Velocity of the fluid.
by using these values can I find the Pressure of the fluid, without consideration of the pump pressure?

RE: Theory behind the Flowing fluid inside the pipe

If i am understanding you correctly then what you are asking basically comes out as the pressure associated with overcoming the friction of the fluid flowing in the pipe at that flow rate.

If this is what you are looking for, Google Darcy Weisbach , and Colebrook White formula.

"Any water can be made potable if you filter it through enough money"

RE: Theory behind the Flowing fluid inside the pipe

Thanks Mr.Ashtree,

But I am not asking pressure loss due to friction inside the pipe. This I can find using the Pipe sizer and some other formule.
what I want is the pressure developed due to the motion of the fluid (Velocity).
that is I found now that is Velocity head = V2/2g.

is this correct?

RE: Theory behind the Flowing fluid inside the pipe

The velocity head is only part of the total energy at the specific location. The line pressure at the location is based on the balance of the fluid pressure with the static head, velocity head, and friction loss.

RE: Theory behind the Flowing fluid inside the pipe

If the flowing fluid is incompressible, with p (rho) as density, a Pitot tube would measure total local pressure or stagnation pressure pstag=p+1/2pv2, while a static gage would measure p. The difference of the readings is the velocity head. The units in this equation can be Pa or N/m2.

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! Already a Member? Login


White Paper – Choosing the Right Spring Loaded Connector
In today’s cost-sensitive world, designers are often driven to specify the lowest cost solution for every aspect of their designs to ensure that their solution is competitively priced and their company remains profitable. However, specifying a low-cost, low-quality connector solution can result in premature failure, considerable re-work costs and damage to reputations. Download Now
eBook – Own the Lifecycle: Sustainable Business Transformation
Increasingly, product and services companies are seeking more information and control in the operational lifecycle of their products, including service and use. Better information about the operational lifecycle, and the ability to use that information, requires more than just unstructured data flowing back from products in the field. Download Now

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