Experimental study of gravitation effects in the flow of a particle-laden thin film on an inclined plane
Author(s)Ward, Thomas; Wey, Chi; Glidden, Robert; Hosoi, Anette E.
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The flow of viscous, particle-laden wetting thin films on an inclined plane is studied experimentally as the particle concentration is increased to the maximum packing limit. The slurry is a non-neutrally buoyant mixture of silicone oil and either solid glass beads or glass bubbles. At low concentrations (ϕ<0.45), the elapsed time versus average front position scales with the exponent predicted by Huppert [Nature (London) 300, 427 (1982) ]. At higher concentrations, the average front position still scales with the exponent predicted by Huppert on some time interval, but there are observable deviations due to internal motion of the particles. At the larger concentration values and at later times, the departure from Huppert is seen to strongly depend on total slurry volume VT, inclination angle α, density difference, and particle size range.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering; Massachusetts Institute of Technology. Hatsopoulos Microfluids Laboratory
Physics of Fluids
American Institute of Physics (AIP)
Ward, Thomas et al. “Experimental Study of Gravitation Effects in the Flow of a Particle-laden Thin Film on an Inclined Plane.” Physics of Fluids 21.8 (2009): 083305. © 2009 American Institute of Physics
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