Degassing of highly viscous liquids

• Autorzy: Dziubiński M. , Kiljański T. , Orczykowska M. , Budzyński P.
• Języki publikacji: EN

Abstrakty

EN

The results of investigation on the velocity of bubble motion under gravitational force in Newtonian and non-Newtonian fluids are presented. Correlation equations are presented which describe the drag coefficient for the case of various rheological models. Equations for the bubble centrifugation time required for the removal of the bubble from a Newtonian fluid were derived. Experiments showed that in a centrifuge the bubble retained a free surface even at much smaller diameters than under gravity forces. A dimensionless bubble diameter was defined and its critical value below which the bubble surface behaved as rigid one was evaluated.

Słowa kluczowe

EN

degassing; non-Newtonian liquid; centrifugation; bubble motion

PL

odmetanowanie; roztwory nienewtonowskie; wirowanie; mechanizm bulgotania

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2003
• Tom: Vol. 5, nr 4
• Strony: 52--53
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Dziubiński M.

autor

Kiljański T.

autor

Orczykowska M.

autor

Budzyński P.

• Faculty of Process and Environmental Engineering, Łódź Technical University, 93-005 Łódź, ul. Wólczańska 213, Poland,

Bibliografia

• (1) Orczykowska M., The Hydrodynamics of Gas BubIes Flow in non-Newtonian Liquids, PhD Thesis, Technical University of Łódź, Łódź, 2002.
• (2) Chhabra R.P., Bubbles, Drops and Particles in Non- Newtonian Fluids. Boca Raton, CRC Press, 1993.
• (3) Dewsbury K., Karamanev D., Margaritis A., Hyddrodynamic Characteristics of Free Rise of Light Solid Particycles and Gas Bubbles in non-Newtonian Liquids, Chem. Eng. Sci. 1999, 54, 4825.
• (4) Bond W.N., Newton D.A.,: Bubbles, Drops and Partieles, Philos Magaz. 1928, 5, 794.