Particle migration rates in a Couette apparatus.

Conference · Tue Jul 01 00:00:00 EDT 2003

OSTI ID:1003988

Hsiao, Shih-Chun ^[1]; Altobelli, Stephen A ^[2]; Ingber, Marc Stuart ^[1]; Mondy, Lisa Ann; Christensen, D ^[1]

---

1. University of New Mexico, Albuquerque, NM
2. New Mexico Resonance, Albuquerque, NM

Bulk migration of particles towards regions of lower shear occurs in suspensions of neutrally buoyant spheres in Newtonian fluids undergoing creeping flow in the annular region between two rotating, coaxial cylinders (a wide-gap Couette). For a monomodal suspension of spheres in a viscous fluid, dimensional analysis indicates that the rate of migration at a given concentration should scale with the square of the sphere radius. However, a previous experimental study showed that the rate of migration of spherical particles at 50% volume concentration actually scaled with the sphere radius to approximately the 2.9 power.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1003988
• Report Number(s): SAND2003-2836C
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COUETTE FLOW
MASS TRANSFER
PARTICULATES
SUSPENSIONS
TWO-PHASE FLOW