水平管および水平に近い傾斜管内での気液環状二相流の研究 : ホールドアップ,摩擦圧力損失および管周方向の膜厚分布

概要

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An experimental investigaiton into an air-water two-phase annular flow in a horizontal tube and near horizontal tubes was carried out. The inclination angles of the tube to horizontal were -10^゜, 0^゜, 10^゜ and 15^゜, where minus means the downward flow. Tube diameter was 26.0 mm. Volumetric fluxes of air and water ranged from 10 m/s to 50 m/s and from 0.002 m/s to 0.4 m/s, respectively. Hold-up, frictional pressure drop and the circumferential position from which liquid film starts to form were measured and the effect of the tube inclination on these parameters were examined. As the results, it was made clear that the effects of tube inclination could not be neglected even in the case of slight inclination and that the mean film thickness averaged over the circumference of the tube was approximately equal to the local mean film thickness at θ= 120^゜ independent of the inclination.
社団法人日本機械学会の論文
1985-08-25