AM06-14-007 浅い環状液層内マランゴニ対流に生じるハイドロサーマル波とセル構造(対流(2),一般講演)

概要

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Experimental study of Marangoni (or thermocapillary) convection of silicone oil was conducted in a shallow annular cavity with outer radius R_o=55mm and inner radius R_i=15 or 27.5mm for liquid heights H in the range 1-3mm. The liquid layer is heated from the outer cylindrical wall and cooled at the inner wall. As Marangoni number (Ma) exceeded a critical value, hydrothermal waves were observed for thin liquid layers, H≤2.5mm. For thicker layers, H>2.5mm, multicell patterns were dominant. At low Ma, the multicell patterns were steady, toroidal rolls. As Ma was increased, the rolls began to rotate around the center and unsteady longitudinal rolls appeared.
日本流体力学会の論文
2006-09-05