On the Determination Method of Entrained Droplet Flow Rate in the Disturbance Wave Region of Annular Flow

概要

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A matter of consideration is pointed out for adequate use of the determination method of entrained the droplet flow rate in two-phase annular flow, which is based on the extraction technique of liquid film through a porous sinter tube. The extraction rate of liquid film is complicatedly related with various parameters such as the axial profile of droplet concentration and the effective length of a porous tube over which a couple of base-film and disturbance wave are completely extracted. An analytical model for the functional relationship between these parameters is proposed. Experiments were made by means of a special film extraction device, which is precisely and continuously variable in the extraction length. Detailed data on the effect of the extraction length upon the extraction rate were obtained ; hence, it was confirmed that the analytical model can reasonably correlate the main parameters for determining the extrainment flow rate.
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