0
TECHNICAL PAPERS

A Numerical Investigation of the Detachment of the Trailing Particle From a Chain Sedimenting in Newtonian and Viscoelastic Fluids

[+] Author and Article Information
N. A. Patankar

Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, MN 55455e-mail: patankar@aem.umn.edu

H. H. Hu

Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315

J. Fluids Eng 122(3), 517-521 (Apr 18, 2000) (5 pages) doi:10.1115/1.1287269 History: Received October 20, 1999; Revised April 18, 2000
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Sequential separation of particles from a chain of six particles in a viscoelastic fluid, ρsf=1.001,Fr0.5/Re=0.026 and De/Re=2.4
Grahic Jump Location
Effect of fluid elasticity. Initial separation ∼0, N=2,ρsf=1.003 and Fr0.5/Re=0.026.
Grahic Jump Location
Effect of viscosity. Initial separation ∼0, N=3 and ρsf=1.01.
Grahic Jump Location
Effect of density ratio. Initial separation ∼0, N=3 and Fr0.5/Re=0.026.
Grahic Jump Location
Effect of number of particles in the leading chain. Initial separation ∼0, ρsf=1.005 and Fr0.5/Re=0.026.
Grahic Jump Location
Phenomenon of critical distance in Newtonian fluids, N=2,ρsf=1.01 and Fr0.5/Re=0.026
Grahic Jump Location
Numerical simulations are performed in a channel with the walls wide apart (the channel width is 15 times the particle diameter)
Grahic Jump Location
Phenomenon of critical distance for chains settling in viscoelastic fluids
Grahic Jump Location
Formation of long chains in Newtonian and viscoelastic fluids. This chain configuration is unstable in Newtonian fluids whereas it is stable in viscoelastic fluids in slow flows.
Grahic Jump Location
Phenomenon of critical distance with two spheres settling in a viscoelastic fluid. The mechanism of attraction is explained by compressive normal stresses (Joseph 6). The mechanism of separation is yet unresolved.

Tables

Errata

Discussions

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