Flow of foam through porous micromodels
This study focuses on the pore level behavior of foam in porous media. Air was injected into porous micromodels which previously had been filled with an aqueous solution of surfactant. The micromodels consist of an etched silicon wafer anodically bonded to a glass plate. The model simulates a monolayer of porous matrix. Three homogenous models of different pore dimensions and one heterogeneous model were used. Visual observations were made to determine the flow characteristics of foam under varying air injection rates, pore dimensions, and surfactant concentration. Foam flow mechanisms, as observed in the micromodels, were recorded on video tapes. The observed mechanisms can be broadly classified as membrane and foam bubble propagation. A considerable reduction of effective mobility was observed in the presence of foam, compared to air-water systems without surfactant.
- OSTI ID:
- 6078038
- Journal Information:
- Diss. Abstr. Int. B; (United States), Vol. 43:8
- Country of Publication:
- United States
- Language:
- English
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