Dynamics of thin-film breakup in a constricted pore
To understand foam formation in porous media, this work considers the dynamics of a wetting liquid film forming an unstable collar (or collars) in a constricted cylindrical tube. A hydrodynamic lubrication analysis is presented to describe the time evolution of a thin viscous film under the influence of surface tension and conjoining or disjoining forces. Time to breakup depends on the pore shape, the strength of the conjoining or disjoining force, the initial film profile, and also, the fluid viscosity, interfacial tension, and unconstricted pore radius which combine to form a characteristic scaling time. Agreement is found between breakup times predicted from the hydrodynamic analysis, and from 16 mm movies taken of the breakup phenomena over a wide range of initial film thicknesses. 11 references, 5 figures.
- Research Organization:
- California Univ., Berkeley (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5836686
- Report Number(s):
- LBL-18947; CONF-850357-3; ON: DE85008442
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
BUBBLES
COLLOIDS
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FILMS
FLUID MECHANICS
FOAMS
FOSSIL FUELS
FUELS
HYDRODYNAMICS
INTERFACES
MATERIALS
MECHANICS
PETROLEUM
POROUS MATERIALS
RECOVERY
SURFACE PROPERTIES
SURFACE TENSION
THIN FILMS
VISCOSITY
WETTABILITY