Finite Element Modeling of Suspended Particle Migration in Non-Newtonian Fluids [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 14 pages : digital, PDF file
- Additional Creators:
- Sandia National Laboratories
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- Shear-induced migration of particles is studied during the slow flow of suspensions of spheres (particle volume fraction φ = 0.50) in an inelastic but shear-thinning, suspending fluid in flow between counterrotating concentric cylinders, The conditions are such that nonhydrodynamic effects are negligible. The movement of particles away from the high shear rate region is more pronounced than in a Newtonian suspending liquid. We test a continuum constitutive model for the evolution of particle concentration in a flowing suspension proposed by Phillips et al. (1992) by using shear-thinning, suspending fluids. The fluid constitutive equation is Carreau-like in its shear-thinning behavior but also varies with the local particle concentration. The model is compared with the experimental data gathered with nuclear magnetic resonance (NMR) imaging.
- Published through SciTech Connect.
Rheology in the Mineral Industry II, Honolulu, HI (US), 03/14/1999--03/19/1999.
Rao, R.; Mondy, L.; Baer, T.; Altobelli, S.; Stephens, T.
- Funding Information:
View MARC record | catkey: 14074499