垂直円管内空気吸込水流に生じる流体音に関する研究 : 流れのようすと流体音との関係(流体工学,流体機械)

概要

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In this study, the relationship between the flow feature of air suction water flow with surface-vortex and fluid noise was investigated. As a results of experiment, when the flow became liquid-gas two-phase flow, three typical flow patterns (bubble flow, slug flow and annular flow) were observed by flow visualization, and the flow-regime map was obtained. It was found that the water flow rate was dominated only the water level and that it did not depend on the pressure difference between the up-stream side of suction and down-stream side of suction. The fluid noise became the biggest at the annular flow case and it was confirmed that the cause was the resonance at the gas-core in the vertical pipe, from the comparison between the calculation results and experimental data.
一般社団法人日本機械学会の論文
2003-08-25