Flow analogy of pseudoplastic liquid in geometrically similar stirred vessels based on numerical analysis.
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概要
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Three-dimensional numerical analysis of flow behaviour such as velocity components, shear rate and apparent viscosity of a highly viscous pseudoplastic Ellis liquid in stirred vessels was performed. The vessels used were geometrically similar, non-baffled ones of 0.2 to 0.8 m vessel diameter each with a 6-blade turbine, a paddle and an anchor-type stirring impeller.<BR>The analogy of flow fields in model and large-scale stirred vessels was investigated by applying the concept of representative shear rate to estimate the apparent viscosity of a power-law fluid proposed by Metzner <I>et al.</I> and Nagata. It was found that the normalized flow profiles of a pseudoplastic liquid in the scaled-up vessels were nearly consistent with those in the model vessel within the impeller blade region, while it was quantitatively shown that the deviation between the two profiles in the outer region of the impeller expands with increasing vessel diameter.
- The Society of Chemical Engineers, Japanの論文
著者
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Saito Fumio
Department Of Cardiology Nihon University Surugadai Hospital
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Kamiwano Mitsuo
Department Of Chemical Engineering Faculty Of Engineering Yokohama National University
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Kaminoyama Meguru
JGC Corporation
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- Flow analogy of pseudoplastic liquid in geometrically similar stirred vessels based on numerical analysis.