Measurements of substructural effects in suspensions using falling ball rheometry

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5236974

Milliken, W J; Powell, R L ^[1]; Gottleib, M ^[2]; Graham, A L ^[3]; Mondy, L A ^[4]

---

1. California Univ., Davis, CA (USA)
2. Ben Gurion Univ., Beer Sheeva (IL)
3. Los Alamos National Lab., NM (USA)
4. Sandia National Labs., Albuquerque, NM (USA)

Falling ball rheometry is used to measure the apparent viscosity of homogeneous suspensions of rods and spheres when the suspended particles are large enough so that only hydrodynamic forces are present. Falling balls which are much larger than the dimensions of the suspended particles measure the average viscosity of the suspension. The authors report upon the apparent viscosity measured using falling balls with diameters that are on the order of and smaller than the characteristics dimension of the suspended particles. They show that in suspensions of rods, a decrease in the apparent viscosity is found when the test balls have diameters less than a critical value.

• OSTI ID: 5236974
• Report Number(s): CONF-881143--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CALCULATION METHODS
DISPERSIONS
FLUID MECHANICS
HYDRODYNAMICS
MEASURING INSTRUMENTS
MECHANICS
PARTICLE SIZE
RHEOLOGY
RODS
SIZE
SPHERES
SUBSURFACE STRUCTURES
SUSPENSIONS
VISCOSIMETERS
VISCOSITY