Rheology of suspensions of rodlike particles
- Univ. of California, Davis (United States)
Suspensions of rigid rodlike particles in Newtonian suspending fluids are considered. The author discusses the dependence of the relative viscosity {mu}{sub r} upon the volume fraction of particles {phi}, their aspect ratio a{sub 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 when a{sub r}{<=}25, data from several laboratories agree and they indicate that {mu}{sub r} depends more strongly upon {phi} than a{sub 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.
- OSTI ID:
- 5302155
- Report Number(s):
- CONF-9006380--
- Journal Information:
- Journal of Statistical Physics; (United States), Journal Name: Journal of Statistical Physics; (United States) Vol. 62:5-6; ISSN 0022-4715; ISSN JSTPB
- Country of Publication:
- United States
- Language:
- English
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