D311 偏心二重円筒間に満たされたポリアクリルアミド水液体の化学反応を伴うカオス混合

概要

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Chaotic Mixing with chemical reaction, Fe^<3+>+K_4[Fe(CN)_6]→KFe[Fe(CN)_6]+3K^+, in a Poly-Acrylic-Amid (PAA) solution between eccentric cylinders with and without chemical reaction has been investigated experimentally. Reactants are initially placed as parallel and straight lines between cylinders and cylinders are rotated in 180 alternatively with the eccentricity is 0.5. The molar concentration of the PAA is varied from 0 (Glycerin) to 0.004mol/ℓ. As the molar concentration of PAA is less than 0.003mol/ℓ, the flow pattern and the reaction pattern are similar in that the chemical reaction takes place in the chaotic region while no reaction is observed in the regular region. As the molar concentration of PAA is 0.004mol/ℓ, the flow pattern varies as the chemical reaction begins. As the chemical reaction begins, the visco-elastic force appears significantly and the product concentrates around the inner cylinder and moves downward along the cylinder with three-dimensional flow motion, As the chemical reaction takes place, number of intermediate ions increases steeply which is supposed to increase the visco-elastic force.
2001-07-31