Abstract
Solid particles of cylindrical shape play a significant role in many separations processes. Explicit equations for the drag coefficient and the terminal velocity of free-falling cylindrical particles have been developed in this work. The developed equations are based on available experimental data for falling cylindrical particles in all flow regimes. The aspect ratio (i.e., length-over-diameter ratio) has been used to account for the particle shape. Comparisons with correlations proposed by other researchers using different parameters to account for the geometry are presented. Good agreement is found for small aspect ratios, and increasing differences appear when the aspect ratio increases. The aspect ratio of cylindrical particles satisfactorily accounts for the geometrical influence on fluid flow of settling particles.
| Original language | English |
|---|---|
| Pages (from-to) | 314-322 |
| Number of pages | 9 |
| Journal | Powder Technology |
| Volume | 183 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 9 2008 |
Funding
Gratefully acknowledged is the support by the Ocean Carbon Sequestration Program, Office of Biological and Environmental Research, U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. Also, support from the U.S. Nuclear Regulatory Commission for Jorge Gabitto under the Historically Black Colleges and Universities Faculty Research Summer program is greatly appreciated. The authors are thankful to Ms. P. P. Henson for editing the manuscript.
Keywords
- Cylindrical particles
- Drag coefficient
- Drag force
- Settling velocity
- Terminal velocity