スケールアップモデルによる交互送液型マイクロリアクタのフローパターン特性の可視化実験(流体工学,流体機械)

概要

論文の詳細を見る
In order to enhance the mixing and reaction yield in a microreator, an alternate pumping method has been investigated. As the visualization results of the flow patterns generated by the alternate pumping in several types of micro channel, the flow patterns were classified into five categories depending on the pumping conditions, which are the Reynolds number and the non-dimensional infusion time that are defined by the infusion flow parameters. One of the flow patterns which we observed is a layered structure and is able to contribute to enhancing the diffusion mixing, because the molecular diffusion time is proportional to the square of the diffusion length and the thickness of each layer in the layered structure can be taken thinner than the width of micro channels, which is the diffusion mixing length in the case of the convestional concurrent pumping. The most appropriate channel for creating the layered structure is a cross-shaped channel consisting of two inlets and two mixing channel. It is confirmed that the thickness of each layer is less than one-tenth of the mixing channel width, i.e. the mixing time is reduced to less than one-hundredth of that in the concurrent pumping with the same dimension.
社団法人日本機械学会の論文
2006-04-25