垂直平板に沿って上昇する空気-水系気泡壁噴流の液流動特性

概要

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An air-water bubbling jet was generated vertically upward along a vertical fiat plate. The liquid flow characteristics represented by the axial mean velocity and the root mean-square value of the axial turbulence component, designated by u^^- and u'_<rms>, were measured with a two-channel laser Doppler velocimeter. The horizontal distributions of u^^- and u'_<rms> followed their respective similar distributions in the vertical region where the buoyancy force acting on bubbles governs the flow field just like the distributions of bubble frequency and void fraction. An empirical equation was proposed for the horizontal distribution of u^^-. The skewness and flatness factors for the axial turbulence component were also discussed to describe the structure of turbulence in more detail.
一般社団法人日本機械学会の論文
1999-06-25