Transition of viscous fingering patterns in polymer solutions

Transition of viscous fingering patterns in polymer solutions

Viscous fingering patterns of aqueous hydroxypropyl methyl cellulose (HPMC) solutions pushed by air in the Hele–Shaw cell were observed as a function of isopropyl alcohol content under a constant pressure of 15 cm H2O. A morphological transition from side branching patterns to tip splitting ones wit...

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Veröffentlicht in:Physics of fluids (1994) 1995-03, Vol.7 (3), p.455-457
Hauptverfasser: Makino, Kyoko, Kawaguchi, Masami, Aoyama, Koichi, Kato, Tadaya
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container_issue 3
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container_title Physics of fluids (1994)
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creator Makino, Kyoko
Kawaguchi, Masami
Aoyama, Koichi
Kato, Tadaya
description Viscous fingering patterns of aqueous hydroxypropyl methyl cellulose (HPMC) solutions pushed by air in the Hele–Shaw cell were observed as a function of isopropyl alcohol content under a constant pressure of 15 cm H2O. A morphological transition from side branching patterns to tip splitting ones with increasing isopropyl alcohol content, accompanied with a decrease in surface tension and an increase in viscosity is found. The observed morphology transition was correlated with the dimension of the fingering pattern, as well as the average tip velocity in the fingering.
doi_str_mv 10.1063/1.868643
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title Transition of viscous fingering patterns in polymer solutions
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