Physics of pattern formation at liquid interfaces. Progress report, July 1, 1985-June 30, 1986
Progress and experiment plans are reported in the areas of viscous fingering in Hele-Shaw flow and binary liquid gels. Force tip-splitting of fingers by using a radial-flow geometry was studied, as well as the noisy features of rectangular flow. An entanglement gel (gellan gum) was found to be nearly ideal for light scattering studies. Time scales for metastable behavior were studied. Planned research includes statistics of rectangular flow, large aspect ratio studies, studies of non-Newtonian fluids, the role of gravity in driving the Saffman-Taylor instability, and tip-splitting and the circular cell. Also planned are studies of wetting properties of IBA for polymers, latent heat of gel samples, varying thermodynamic path and index of refraction, exchanges between the gel and the supernatant liquid, and deuterated samples. (LEW)
- Research Organization:
- Pittsburgh Univ., PA (USA). Dept. of Physics and Astronomy
- DOE Contract Number:
- FG02-84ER45131
- OSTI ID:
- 5196989
- Report Number(s):
- DOE/ER/45131-2; ON: DE86015594
- Country of Publication:
- United States
- Language:
- English
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