アスペクト比が小さいテイラー渦の変異モードにおけるエクストラ渦とツイン渦の存在

概要

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This experimental work on Taylor vortex flow in a gap with a small aspect ratio is concerned with two extra vortices and a twin vortex system depending on an anomalous cell of the anomalous mode. Extra vortices are smaller than other vortices such as defined cells, and stay at the corners of the inner rotating cylinder and the outer stationary one and the end plate with anomalous cells at any Reynolds number and aspect ratio. For one-cell flow (anomalous one-cell mode) in a symmetric system, an outer extra vortex develops and grows to the same size as the main cell, only in a certain range of aspect ratio of less than one. A twin vortex is observed to form when two vortices line up in the direction of the radius. On the end plate there are three flow fields; two are extra vortex flows and the other is the main cell flow. It appears that the flow direction of the anomalous cell is from the inner cylinder to the outer one, opposite to the flow direction of the normal cell.
一般社団法人日本機械学会の論文
1992-02-25