×
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

Particle Transport Velocity Through Pipe

Particle Transport Velocity Through Pipe

Particle Transport Velocity Through Pipe

(OP)

Hi,

I am looking for a formula and/or source that could give me transport velocities (aka settling velocities) for particles traveling through pipes. My goal is to wash coal debris into a drainage system and transport it through a 6" pipe and not allow the fine particles of the coal to settle and form sediment piles in the pipe which could later build up and eventually clog the pipe.

Any help is greatly appreciated. Thank You.

RE: Particle Transport Velocity Through Pipe

There was a professor at the University of Missouri - Columbia who spent much of his life figuring this all out.  I think his name was Dr. Liu.  Tragically he died a few months ago in a car crash.  I am sure UMC has some of his works or publications outlining this idea.  He was working on this when I was a studnet in 1975!!! and was still working on it.  Not sure if it was really that big a problem or he just strung it out for 35+ years

RE: Particle Transport Velocity Through Pipe

jssmith1978:

I have used GPSA, 11th Edition, Volume 1, Section 7 with success.

Applicable are Equations 7-1 thru 7-6 and Figures 7-3 & 7-4.

The above works well provided you are not too concerned about a moving bed flow pattern and you just want to get an idea of which particles will carry and which particles will settle out.  Apart from that, the book:

"Flow Of Complex Mixtures In Pipe" - Govier, Aziz et al will give some more complete treatment.

Regards,

SNORGY.

RE: Particle Transport Velocity Through Pipe


Since I do not know all your details, just a thought:

Seems that you by 6" drainage is thinking unpressurized, self-fall and regulating the setteling problem by amount of water?

This could be OK if transport is short and total cost including waterprice (amount including cleaning afterwards).

If not, there exists pressuriced systems either operating by (batchwise) pumps (using cleaner part of water as pushing all debris in front),or vessels acting as batchwise cannons, using clean water or water driven by pressuriced air as a batchwise transport media.

More solid and lowerdimension pipe could perhaps be selected, and you do not need self-fall pipelines.

Pipes and valves adapted to pigging and given (sharp, abrasive) media. Remember in case solid clambering of pipe.

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