1601 光学式液面傾斜角計による水膜流崩壊過程の観察(2)(OS16-1 混相流の光応用計測,OS16 混相流の光応用計測,オーガナイズドセッション)

概要

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The present study focuses on acquisition of quantitative data for measuring the wave number dependence on disturbance growth. A plane liquid sheet plunged from two-dimensional nozzle into stationary gas. The sheet starts flattering downstream with a streamwise wavelength and breaks down. Oscillation amplitude exponentially increases downstream regardless of the streamwise wave number. For estimation of the growth rate of the disturbance, surface gradient was measured by optical liquid surface inclinometer. The experimental results revealed that the growth rate reaches to maximum at the wave number corresponds to the unexcited flow. The phase velocity is almost constant for downstream position and it equal to nozzle exit velocity.
一般社団法人日本機械学会の論文
2006-10-28