An Experimental Study on the Mass Transfer Rate of Droplets in Annular Two-Phase Flow

Deposition rate of droplets in annular flow was measured to elucidate the effect of the shape of flow obstacles that were placed in a flow channel. In the present experiments, the test section was a vertical round tube of 5mm in inside diameter, air and water were used as test fluids, and double fil...

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Bibliographic Details
Published inJSME International Journal Series B Fluids and Thermal Engineering Vol. 49; no. 2; pp. 271 - 278
Main Authors OKAWA, Tomio, SHIMADA, Naoya, KOTANI, Akio, KATAOKA, Isao
Format Journal Article
LanguageEnglish
Published Tokyo The Japan Society of Mechanical Engineers 2006
Japan Science and Technology Agency
Subjects
Annular Flow
Deposition
Droplet
Experiment
Flow Obstacle
Multi-Phase Flow
Obstacle Shape
Pipe Flow
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Summary:Deposition rate of droplets in annular flow was measured to elucidate the effect of the shape of flow obstacles that were placed in a flow channel. In the present experiments, the test section was a vertical round tube of 5mm in inside diameter, air and water were used as test fluids, and double film extraction technique was adopted for the measurement. Seven flow obstacles were tested; three obstacles were tubular in shape while other four obstacles were also cylindrical but the cross-sectional areas were varied smoothly in the axial direction. It was revealed that the deposition rate of droplets markedly increased if the present small flow obstacle was placed in the test section tube. The increasing rate was dependent primarily upon the cross-sectional shape of flow obstacle at the maximum cross-sectional area.
Bibliography:ObjectType-Article-2
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ISSN:1340-8054
1347-5371
DOI:10.1299/jsmeb.49.271