Three-Dimensional Gas-Phasic Velocity Measurement of Two-Phase Flow in Terms of Bubble Size in a Large-Diameter Pipe

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  • 大口径円筒管内二相流における気泡サイズ毎の三次元気相速度計測
  • ダイコウケイ エントウカン ナイ ニソウリュウ ニ オケル キホウ サイズ ゴト ノ サンジゲン キソウ ソクド ケイソク

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Abstract

A wire-mesh sensor (WMS) can acquire a void fraction distribution at a high temporal and spatial resolution and also estimate the velocity of a vertical rising flow by investigating the signal time-delay of the two WMSs. The authors propose to extend this time series analysis to estimate the multi-dimensional velocity profile via cross-correlation analysis between a point of upstream WMS and multiple points downstream. Moreover, bubbles behave in various ways according to size, which is used to classify them into certain groups.

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