Open Access Open Access  Restricted Access Subscription or Fee Access

Hydrodynamic and Mass Flow in a Mixing Stirred Tank


(*) Corresponding author


Authors' affiliations


DOI: https://doi.org/10.15866/ireme.v8i6.4020

Abstract


The manufacture and development of materials very often involves agitation or mixing. The mixing system of the vessel is always an important aspect of design, because the involved processes (chemical reaction, heat or component transport) need adequate mixing, and phase homogeneity. In our work we propose a mobile of agitation which does not exist in the literature it is the case of a chamfered paddle impeller. The hydrodynamic and mass characteristics of this impeller have been investigated in the case of viscous Newtonian fluids. 2D finite volume based computational fluid dynamics (CFD) simulations have been carried out. It was found that the chamfered paddle impeller could reduce mixing time compared to that obtained by the straight impeller in laminar flow region. The effect of the degree of chamfering impeller on mixing time was also studied and a significant reduction of mixing time was observed.
Copyright © 2014 Praise Worthy Prize - All rights reserved.

Keywords


Design; Chamfered Paddle; Mixing Time; Simulation; Finite Volume

Full Text:

PDF


References


Hiraoka, I. Yamada, and K. Mizoguchi, “Two dimensional model analysis of flow behavior of highly viscous non Newtonian fluid in agitated vessel with paddle impeller,” Journal of Chemical Engineering of Japan, vol. 12, pp. 56-62, 1979.
http://dx.doi.org/10.1252/jcej.12.56

J. Aubin, I. Naude, C. Xuereb and J. Bertrand, Blending of Newtonian and shear-thinning fluids in a tank stirred with a helical screw agitator, Trans. Inst. Chem. Eng. 78 (4) (2000) 1105-1114
http://dx.doi.org/10.1205/026387600528382

Tanguy, P.A., Thibault, F., Brito de la Fuente, E., 1996. A new investigation of the Metzner–Otto concept for anchor mixing impellers. The Canadian Journal of Chemical Engineering 74, 222–228.
http://dx.doi.org/10.1002/cjce.5450740207

E. Brito-De La Fuente, L. Choplin, and P. A. Tanguy, “Mixing with helical ribbon impellers: effect of highly shear thinning behavior and impeller geometry,” Transactions of the Institution of Chemical Engineers, vol. 75, pp. 45-52, 1997
http://dx.doi.org/10.1205/026387697523381

Hiraoka S., Yamada, Numerical analysis of flow bihaviour highly viscous fluid in agitated vessel J.Chem. Eng. Japan, 11, 1978, p.487
http://dx.doi.org/10.1252/jcej.11.487

M. Abid, X. Catherine, and J. Bertrand, “Modeling of the 3D hydrodynamics on 2-blades impellers in stirred tanks filled with a highly viscous fluid,” Canadian journal of chemical engineering, vol. 72, pp. 184-193
http://dx.doi.org/10.1002/cjce.5450720202

Anne-Archard, D., Boisson H, A finite element simulation of the crossed of viscoelaticity and inertia in an agitated vessel Intl. Num. Meth. Fluids, 21,1995, p.75
http://dx.doi.org/10.1002/fld.1650210106

Youcefi, A., AnneArchard, D., Boisson, H. C., and Sengelin, M., 1997, "On the influence of liquid elasticity on mixing in a vessel agitated by a two-bladed impeller, J. Fluids Eng. 119(3), 616-622 (Sep 01, 1997).
http://dx.doi.org/10.1115/1.2819289

A. Iranshahi, C. Devals, M. Heniche, L. Fradette, P. .Tanguy and K. Takenaka, Hydrodynamics haracterization of the Maxblend impeller, Chem. Eng. Sci. 62 (4) (2007) 3641-3653.
http://dx.doi.org/10.1016/j.ces.2007.03.031

Bertrand F., Tanguy P.A., Brito-De La Fluente E.,A new perspective for the mixing of yield stress fluids with anchor impellers, J. Chem. Eng. Jpn. 29 (1) (1996) 51-58
http://dx.doi.org/10.1252/jcej.29.51


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize