Cookies Policy
X
Cookie Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Investigation of gas–solid flow structure after a 90° vertical-to-horizontal elbow for low conveying gas velocities

MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

Price:
$30.00+ Tax (if applicable)
Add to Favorites

image of Advanced Powder Technology

The characteristics of gas–solid flow after a 90° vertical-to-horizontal elbow, where the flow in the vertical pipe is upward, were investigated both numerically and experimentally for low conveying gas velocities. The experiments were conducted in a 0.154-m ID test section using pulverized coal particles having a mean particle diameter of 50 μm. The time-averaged local particle concentration and velocity were measured using a fiber optic probe at various locations along the length of the horizontal pipe after the elbow. The effects of gas flow velocity, gas to solids mass flow rate ratio and elbow radius to pipe diameter ratio on particle concentration and velocity profiles, and deposit characteristics were investigated. Computational fluid dynamics simulations were performed to study the particle deposition characteristics. Experiments show that saltation velocity is affected by the gas to solids mass flow rate ratio and elbow radius to pipe diameter ratio. The maximum deposit thickness typically occurred near the leading edge of the deposit. Average deposit thickness decreased with increasing gas to solids mass flow rate ratio. The numerical simulations indicate that the coarse particles move into the rope created in the elbow and secondary flows carry the small particles around the pipe circumference through the particle-free regions.

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Create email alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Name:*
    Email:*
    Your details
    Name:*
    Email:*
    Department:*
    Why are you recommending this title?
    Select reason:
     
     
     
     
    Other:
     
    Advanced Powder Technology — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation