1421 高分子水溶液のマイクロチャネル内流れ(S30-4 複雑流体の流動現象(4),S30 複雑流体の流動現象)

概要

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The flows of aqueous solutions of polyacrylamide (PAA) through microchannel were investigated. Velocity profile in steady flows in straight channel and vortex length at abrupt contraction were measured. The channel is made of two different (hydrophilic and hydrophobic) materials. From the velocity profile measurement, apparent slip was observed at wall surface of the channel. It was found that apparent slip velocity on the hydrophobic surface is larger than that on the hydrophilic surface. As a result, velocity profile become asymmetric to the center line of the channel. However, it was found that the asymmetric profile was not obsreved at the contraction flow.
社団法人日本機械学会の論文
2007-09-07