Power correlation for anchor and helical ribbon impellers in highly viscous liquids
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In this paper, a new power correlation for both anchor and helical ribbon impellers in highly viscous Newtonian liquids is proposed on the basis of a physical model developed from an analytical approximate expression for the drag of a plate in viscous liquids bounded by a plane wall.Abstract:
A new power correlation for both anchor and helical ribbon impellers in highly viscous Newtonian liquids is proposed on the basis of a physical model developed from an analytical approximate expression for the drag of a plate in viscous liquids bounded by a plane wall. The correlation, obtained by inserting the empirical factor of geometrical variables in the above expression, shows good agreement with experimental data of power consumption of anchor and helical ribbon agitators obtained in this work and other literature.read more
Citations
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Journal ArticleDOI
Scale-up in laminar and transient regimes of a multi-stage stirrer, a CFD approach
TL;DR: In this paper, a scale-up study of a multi-stage industrial agitator system adapted to the mixing of a mixture whose viscosity varies during the process has been characterized by using CFD.
Journal ArticleDOI
Power consumption of helical ribbon mixers in viscous newtonian and non-newtonian fluids
P. Ayazi Shamlou,M.F. Edwards +1 more
TL;DR: In this paper, power input measurements for helical ribbon impellers for two scales; a 0.15 m diameter and a 1.4 m diameter tank are reported. But the power requirements of the impeller geometry has a profound effect upon power requirement, particularly in the laminar region.
Book ChapterDOI
Fluid mechanics and heat transfer with non-Newtonian liquids in mechanically agitated vessels
Journal ArticleDOI
CFD Investigation of the Mixing of Yield‐Pseudoplastic Fluids with Anchor Impellers
TL;DR: In this article, the authors simulate the 3D flow domain in the mixing of pseudoplastic fluids possessing yield stress with anchor impellers, using a computational fluid dynamics (CFD) package.
Journal ArticleDOI
Mixing of pseudoplastic fluids using helical ribbon impellers
TL;DR: In this article, a linear relationship between the impeller speed and the local shear rate near the tip of a helical ribbon impeller has been found, which is applicable to both Newtonian and power-law fluids for power consumption.
References
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Book
Mixing: Theory and Practice
Vincent W. Uhl,Joseph B. Gray +1 more
TL;DR: Mixing: theory and practice, mixing: theory-and-practice, Mixing: practice and theory as mentioned in this paper, Mixing-theoretic and theory-based mixing.