The Effect of Particle Shape on Pressure Drop in Turbulent Pipe Flow of a Gas-Solid Suspension

[+] Author and Article Information
M. T. Coughran

Ship Hydromechanics Department, David Taylor Research Center, Bethesda, MD 20084

J. Fluids Eng 110(2), 222-225 (Jun 01, 1988) (4 pages) doi:10.1115/1.3243538 History: Received January 21, 1987; Online October 26, 2009


The pressure drop was measured for air suspensions of spherical paricles and two types of fibrous partcles, all having mean diameters of between 8 and 20 μm, in the same apparatus and at the same operating conditions. The pipe diameter was 50.42 mm. A Reynolds number range of 61,000 to 114,000 and loading ratio range of 0.06 to 0.30 were investigated. Air-sphere suspensions showed drag reduction, in agreement with published results. Fairly uniform fibers of aspect ratio = 75 gave no drag change and drag increases resulted with “random cut” fibers of mean aspect ratio = 31, contrary to the published results for water-fiber suspensions. A relative humidity effect was also shown for fibrous particles. The flocculation of the fibers may be an important variable to address in future experiments.

Copyright © 1988 by ASME
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In