Abstract
In order to examine the flow behavior of polymer solutions through porous media, the measurement of pressure loss and the experiment for flow visualization were carried out with wavy channels as one of the model channels of porous media. The test fluids used are aqueous solutions of polyacrylamide (PAA) with two different concentrations. The occurrence of the excess pressure loss, which was not due to the effect of the centrifugal force, was found for the PAA solutions. The relations between the friction factor ratio and the Deborah number were similar to that obtained for the flow through porous media. Furthermore, the results of the flow visualization suggest that the elongational property of the PAA solutions is connected with the occurrence of the excess pressure loss.
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Koshiba, T., Mori, N. & Nakamura, K. Measurement of pressure loss in the flow of polymer solutions through wavy channels. Rheol Acta 33, 438–445 (1994). https://doi.org/10.1007/BF00366586
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DOI: https://doi.org/10.1007/BF00366586