大口径鉛直管内気液二相流の圧力損失特性

概要

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Gas-liquid two phase flow in a large diameter pipe can be found in nuclear reactors, chemical reactors and so on. Precise data in a large diameter pipe were needed for rational design and operation. The databases in large diameter pipes, however, are not adequate compared with small ones. In the previous paper, the characteristics of void fraction were reported. In the present study, pressure drops in air-water two-phase flow were measured in large diameter vertical pipe with a diameter of 230mm and 8m in height. Experimental data on the pressure drops were presented. The relation between pressure drops and volumetric flux of each phase were investigated. In the result of comparison of L-M method and Murakami's data, it was clarified that frictional multiplier became larger than in small diameter, and was affect by <J_L> and diameter.
神戸市立工業高等専門学校の論文
2006-03-01