Electronic Resource
Springer
Journal of statistical physics
62 (1991), S. 1073-1094
ISSN:
1572-9613
Keywords:
Rheology
;
rods
;
viscosity
;
aspect ratio
;
suspension
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Suspensions of rigid rodlike particles in Newtonian suspending fluids are considered. We discuss the dependence of the relative viscosityμ r upon the volume fraction of particlesϕ, their aspect ratioa r, and the particle orientation distribution when the particles are sufficiently large that hydrodynamic forces are dominant. Theoretical results are reviewed for a variety of long slender particles. Experimental results obtained using classical rheometrical techniques are discussed. It is shown that whena r⩽25, data from several laboratories agree and they indicate thatμ r depends more strongly uponϕ thana r. Previous experimental results using falling ball rheometry are discussed as well as some more recent findings. These are shown to provide insights heretofore unavailable into the macroscopic rheology of suspensions of randomly oriented and oriented rods.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01128178
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