Unstable Flow of Viscoelastic Fluids : Fluids Engineering
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概要
- 論文の詳細を見る
An equation of oscillation is obtained from both the pressure balance in a reservoir-capillary system and the momentum balance of a jet between the exit of the capillary and the downstream cross section where the velocity of the jet is uniform. Through and examination of this equation, the following results are found: (1) The critical shear rate of an unstable flow is the shear rate at which the (φ+Bξ) term of the first differential coefficient in the second order differential equation is zero. (2) When the (φξ+ηψ) term of the zero order differential coefficient in the equation becomes negative, the jet always exhibits unstable flow. (3) As has been proved by results obtained up to this time, the principal cause of unstable flow is irregular in the vicinity of the capillary entrance.
- 一般社団法人日本機械学会の論文
- 1987-08-15
著者
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Tomita Y
Faculty Of Engineering Tokyo University Of Science
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Tomita Y
Science Univ. Tokyo Noda Jpn
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TOMITA Yukio
Department of Surgery, Faculty of Medicine, Tohoku University
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Tomita Yukio
Faculty Of Science And Technology Science University Of Tokyo
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SHIMBO Toshio
The Tokyo Metropolitan College of Aeronautical Engineering
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Tomita Yukio
Department Of Engineering Physics Faculty Of Engineering Kyoto University
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