熱工学コンファレンス講演論文集
Online ISSN : 2424-290X
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B243 立方体容器内での塩水の表面凝固に伴う二重拡散対流の数値解析
鎌倉 勝善宮下 尚尾添 紘之
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p. 393-394

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The double diffusive natural convection during the freezing from the top surface of an aqueous solution was numerically studied at the Prandtl number Pr=13,the Lewis number Le=100,the Rayleigh number Ra_0=10^6 and the buoyancy ration N_0=0.5,1 or 5. At first, a boundary layer of concentration was formed near the top of solution with time. Then salt-finger phenomena occurred and the solute accumulated near the bottom of the vessel. The finger pattern depended on the ratio of cooling square area to entire surface area, the buoyancy ratio and the freezing velocity.
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