著者

反町 和則 長谷川 富市 鳴海 敬倫

出版者

一般社団法人 日本機械学会

雑誌

年次大会講演論文集

巻号頁・発行日

vol.2006, pp.51-52, 2006

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When air pushes a more viscous fluid in two parallel plates by a syringe pump, viscous fingering pattern have been observed. Water and aqueous glycerin solutions are used as Newtonian fluids. Polyacrylamide (Separan AP30) solutions and aqueous glycerin solutions adding polyacrylamide are used as non-Newtonian fluids. It was found that it showed the bifurcation of viscous fingering to be different by a kind of solution. And, it was found that the solution concentration, gap and air pressure influenced a bifurcation pattern. Furthermore, it was not found a large bifurcation pattern in dilute Polymer solution and aqueous glycerin solutions with lower concentration. Then, tip speed of bifurcation was low.