Circulation time for pseudoplastic liquids in a vessel equipped with a variety of helical ribbon impellers.
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概要
- 論文の詳細を見る
Measurements of the circulation time for pseudoplastic liquids in an agitated vessel of 0.128 m diameter equipped with a variety of helical ribbon impellers were carried out in a wide range of apparent Reynolds number by means of a small tracer particle. Seven impellers of different dimensions (clearance between blade and vessel wall, impeller pitch and blade width) were employed in this work.<BR>Whilst previous investigators have suggested that the dimensionless circulation time is independent of the Reynolds number, a number of data obtained in this work have proved that the dimensionless circulation time of pseudoplastic liquids with a helical ribbon impeller decreases slightly with decrease in the apparent Reynolds number in the laminar flow region. It was also found that the circulation time increases as the liquid shear-thinning property increases. These results are explained by considering the relation between the motion of a tracer particle and the non-uniformity in viscosity created in a vessel.
- The Society of Chemical Engineers, Japanの論文
著者
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Yokota Toshiyuki
Department Of Chemistry And Chemical Engineering Faculty Of Engineering Yamagata University
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TAKAHASHI Koji
Departent of Materials Science and Engineering,Faculty of Engineering,Yamagata University
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Konno Hirotaka
Department of Chemical Engineering, Yamagata University
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Iwaki Munemichi
Department of Chemical Engineering, Yamagata University
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