×
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

Liquid movement in liquid

Liquid movement in liquid

Liquid movement in liquid

(OP)
I want to estimate the distance to which liquid flow can reach.
I have circle tank with 6.6 m diameter and 6 m height.
Through 1.5 inch inlet pipeline, liquid is pumped into this tank as 3 m3/hr flowrate.
At the inlet nozzle, the liquid velocity could estimated as 0.754 m/sec.
How can I calculate the distance from inlet nozzle to flow stop point?
Initial condition of the tank is filled with liquid above the inlet nozzle.
 

RE: Liquid movement in liquid

The flow will not stop. It will induce a circulating motion in the vessel. In fact this technique is often used for blending additives into liquids if the densities are not too different.

If you want to prevent the circulation being set up you need to have 2 or 4 inlets all directly opposite each other - i.e. spaced either 180 or 90 degrees around the circumference.  When the jets meet in the middle of the tank they cancel each other. This is often done with the inlet to a decanter where you want as little turbulence as possible in the vessel.

Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com

RE: Liquid movement in liquid

Do you mean you want to know to what height the tank will be filled?  If so, and its a centrifugal pump, convert the pressure remaining at the tank inlet to head, when the pump has backed up on its curve and its flow has reached zero.

**********************
"Pumping systems account for nearly 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic  (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/

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