円錐平板型回転粘度計によるＣａｓｓｏｎ流体ならびにＨｅｒｓｃｈｅｌ‐Ｂｕｌｋｌｅｙ流体の流動解析

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タイトル別名
  • Cone-and-plate viscometry of casson fluids and Herschel-Bulkley fluids.
  • エンスイ ヘイバンガタ カイテン ネンドケイ ニ ヨル Casson リュウタ

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Cone-and-plate viscometers are suitable and popular devices for measuring non-Newtonian fluid flow characteristics because the shear rate of fluids in the gap between the cone and the plate is constant and they are easy to operate and commercially available. In this paper, a theoritical analysis of the cone-and-plate viscometerfor a Casson model fluid and a Herschel-Bulkley model fluid is presented.<BR>Since the theoritical equations derived are complicated, especially for Herschel-Bulkley model fluid, the first and second approximate expressions of the equations are derived. It is found through the comparison between the theoritically calculated values and the approximates that the first approximate expression is unsuitable for the calculation in the case that the included angle between the cone and the plate is over 2° to keep the relative error between the theoritical values and the approximate ones under 1%.<BR>Moreover, it is confirmed that the second approximate expression is applicable to the calculation in the case that the included angle is up to 4° under the condition in which the relative error is less than 1%.

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  • 資源と素材

    資源と素材 106 (6), 337-340, 1990

    一般社団法人 資源・素材学会

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