A Hydrodynamic and Mass Comparative Study in the Field of Energy Consumption between a Chamfered and a Straight Bladed


(*) Corresponding author


Authors' affiliations


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


Steps encountered in industrial production lines, food, cosmetics, pharmaceuticals, petrochemicals, cleaning products, etc. draw upon the precepts of agitation, agitation fluid mechanics aims to promote the mixture to obtain a certain degree of homogeneity of the final product and increase the mass transfer phenomena. A hydrodynamics study and mass is needed to optimize the design of tanks and mobile agitation. A local study and global namely speed and the number of power on a system of conventional stirring stirred by a bladed right (d/D = 0.5) allowed us to compare our results with experimental literature, a very good agreement was observed. This validation will then perform simulations on a two-blade configuration such as a chamfered the number of powers is analyzed. It was shown that the hydrodynamics is modified by the effect of chamfer mobile that plays a role. A comparative analysis between the chamfered and the straight bladed is adopted


Copyright © 2013 Praise Worthy Prize - All rights reserved.

Keywords


Mechanical Agitation; Newtonian Fluid; Numerical Simulation; CFD; Two-Bladed Stirrer Chamfer; Viscous Fluids; Bladed Chamfered; Mass Transfer; Miscible Fluids; Hydrodynamics

Full Text:

PDF


References


M.Kuriyama , H.Inomata, K. Arai , and S.Saito . Numerical solution for the flow of highly viscous fluid in agitated vessel with anchor impeller, A.I.Ch.E. Journal. Vol. 28, N° 03, ( 1982), pp 385-391.
http://dx.doi.org/10.1002/aic.690280304

J.Bertrand, Agitation of viscous fluids case of mobile paddle, anchor and gates, Ph.D. Thesis, National Polytechnic Institute of Toulouse, 1983.

J.Bertrand. and J.P.COUDERC, Numerical study of flow generated by an anchor in the case of viscous Newtonian or pseudo-plastic fluids, Entropy No. 125/126 , 1985.

A.Youcefi, Experimental study of the flow of a viscoelastic fluid around a bladed stirrer stirred tank, PhD Thesis, Toulouse National Polytechnic Institute, 1993.

Hiraoka.S, Yamada.I, and Mizoguchi.K, Numerical analysis of flow behaviour of highly viscous fluid in agitated vessel, Chemical Engineering of Japan, 11, 6, (1978),pp 487-493.
http://dx.doi.org/10.1252/jcej.11.487

Hiraoka.S, Yamada.I, and Mizoguchi.K, Two dimensional model analysis of flow behaviour highly viscous non-newtonian fluid in agitated vessel with paddle impeller, Chemical Engineering of Japan, 12, 1, (1979), pp56-62.
http://dx.doi.org/10.1252/jcej.12.56

D.Anne Archard , Numerical simulation of flow generated in a tank with a bladed stirrer with a finite element method , Internal Report No. 88-7. Toulouse National Polytechnic Institute , 1988.

D.Anne Archard, H.C.Boisson, H.HA-Minh, Finite element simulation of rotating flow of a viscoelastic fluid, XI th International Congress on Rheology. Brussels, Belgium, 1992.
http://dx.doi.org/10.1016/b978-0-444-89007-8.50113-1

C.Kuncewicz, Three-dimensional model of laminar liquid flow for paddle impellers and flat-blade turbines, Chemical Engineering Science, Vol. 47, No. H/16, (1992), pp. 3959-3967.
http://dx.doi.org/10.1016/0009-2509(92)85145-2

R.M.Hockey, and J.M Nouri, Turbulent flow in a baffled vessel stirred by a 60 ° pitched blade impeller, chemical Engineering Science, Vol. 51, No. 19, (1996), pp. 4405 4421.
http://dx.doi.org/10.1016/0009-2509(96)00267-9

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

S M C P. Pedrosa, NUNHEZ .J R, The behaviour of stirred vessels with anchor type impellers, Computers and Chemical Engineering 24, (2000), pp 1745-1751.
http://dx.doi.org/10.1016/s0098-1354(00)00456-7

G.Papa Dakis, Rice. M, HALL. J, and M.Yianneskis, Investigation of laminar flow in a stirred vessel at low Reynolds numbers, Chemical Engineering Science, 61, 2006, pp 2762 – 2770.
http://dx.doi.org/10.1016/j.ces.2005.10.074

F. SAVREUX, P. JAY, A. MAGNIN, Viscoplastic fluid mixing in a rotating tank, Chemical Engineering Science. 62 ,(2007) ,2290 – 2301.
http://dx.doi.org/10.1016/j.ces.2007.01.020

S.MASIUK, R. RAKOCZY, M. KORDAS, Comparison density of maximal energy for mixing process using the same agitator in rotational and reciprocating movements, Chemical Engineering and Processing 47, (2008) 1252–1260.
http://dx.doi.org/10.1016/j.cep.2007.04.004

L.Rahmani, B.Draoui, B.Mébarki, M.Bouanini,O.Hami, Heat transfer to Bingham fluid during laminar flow in agitated tank,(2009) International Review of Mechanical Engineering (IREME), 3 (2), pp. 156 – 161.
http://dx.doi.org/10.1615/ichmt.2008.cht.1240

S. Gohel,S. Joshi,M. Azhar, Marc Horner ,and Gustavo Padron, CFD Modeling of Solid Suspension in a Stirred Tank: Effect of Drag Models and Turbulent Dispersion on Cloud Height, Hindawi Publishing Corporation International Journal of Chemical Engineering , Volume (2012), Article I D 956975,9 pages. doi:10.1155/2012/956975.
http://dx.doi.org/10.1155/2012/956975


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2022 Praise Worthy Prize