Convective Currents in a Horizontal Layer Divided by a Permeable Wall

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概要

• 論文の詳細を見る

• When a layer of fluid heated from below is divided by a horizontal porous wall, the onset of thermal instability is suppressed. The present paper deals with this phenomenon.Visual observations suggest two possible types of convection, one of which is local convection bounded on the top (or bottom) by the permeable wall, and the other is convection passing through the wall. On the basis of these flow patterns, an analysis gives two kinds of critical Rayleigh numbers, the smaller of which is considered to produce convection of the corresponding pattern. Here suppression of convection is caused by an increase in the work done by viscous forces or damping forces. This analysis can approximately explain the experimental values of the critical Rayleigh number. A similar analysis is also made for a porous layer in which there exists a porous wall of smaller permeability.

• 一般社団法人日本機械学会の論文

著者

• Masuoka Takashi

  The Kyushu Institute Of Technology

関連論文

• Convective Currents in a Horizontal Layer Divided by a Permeable Wall

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