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- W2314495687 abstract "The rheological behavior of polyacrylamide solution is measured with cone-and-plate viscometer and damped oscillation torsion pendulum equipment. The relationship between viscosity, relaxation time and shear rate is analyzed by a three-element fluid model.The pressure drop of the flow of viscoelastic fluid through porous media consists of two parts, that is a viscous part and an elastic part. The modified Blake-Kozeny model represents the flow of a power-law fluid through the porous media. A dimensionless number, which is equivalent to the Deborah number, is formulated to represent the elastic effect. An equation is proposed to calculate the elastic pressure drop, which contains the dimensionless number, velocity, core properties (permeability and porosity), fluid properties (flow behavior index and consistency index) and coefficients which are determined experimentally. A modified bed factor is defined to expand the modified Blake-Kozeny model into the proposed model for the viscoelastic fluid. Equations of pressure drop, Reynolds number, apparent viscosity and resistance factor for the flow of viscoelastic fluid through porous media are formulated with the modified bed factor.The model is compared with the experimental data of the flow of polyacrylamide solutions through Berea sandstone. The relationship of fRe=1 exists in the experimental ranges. The calculated values of the apparent viscosity approximately agree with the experimental data." @default.
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- W2314495687 date "1985-01-01" @default.
- W2314495687 modified "2023-10-05" @default.
- W2314495687 title "Flow of polyacrylamide solution through porous media." @default.
- W2314495687 doi "https://doi.org/10.3720/japt.50.185" @default.
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