20508 水溶性ポリマー溶液に形成される化学反応を伴うMiscible viscous fingeringの特性(OS1 反応性流れの基礎と応用へ向けた展開)

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Reactive miscible viscous fingering (RMVF) occurs when a reactive and miscible less-viscous liquid displaces a more-viscous liquid in a Hele-Shaw cell. In the present study, to investigate the effect of polymeric characteristics of liquid on RMVF, we experimentally compared RMVF in a Hele-Shaw cell formed in a water-soluble polymer solution with that formed in a glycerin solution having the almost same viscosity as the water-soluble polymer solution has. Under the present experimental condition, product distributions in RMVF formed in the glycerin solution depends on the ratio between initial reactant concentrations included in the more- and less-viscous liquids normalized by the stoichiometric ratio of the chemical reaction, ψ_v; the product significantly exists inside the fingers for ψ_v≪1, while it concentrates around the fingertips for ψ_v1≫. On the other hand, product distributions in RMVF formed in the water-soluble polymer are independent of ψ_v; the product concentrates at the fingertips regardless of ψ_v.
社団法人日本機械学会の論文
2005-03-17