B206 環状流における気相乱流変調におよぼす気液界面の影響に関する研究(オーガナイズドセッション3 : 界面における輸送現象の物理)

概要

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Experimental studies are made on the effect of liquid film to gas-phase turbulence modification on air-water annular flow in vertically arranged round tube. Gas-phase turbulence structure and characteristics such as time- averaged velocity profile, fluctuation velocity profile, power spectrum, and auto-correlation coefficient are quantitatively measured by using the hot-wire anemometer. Measured values are quantitatively examined and compared with the single-phase flow. Followings are noted. (1) Time-averaged velocity profiles are modified to sharpened shape compared with single-phase flow. (2) Fluctuation velocity in axial direction becomes larger than that of single-phase flow through the all-radial position. (3) Turbulence in annular flow is modified to coherent structure, which should be affected by gas-liquid periodically moving wavy interface.
一般社団法人日本機械学会の論文
2001-11-03