Transient CFD simulations of turbulent liquid - liquid flow in a Kenics static mixer. Radial and tangential velocities

• Authors: Halina Murasiewicz , Zdzislaw Jaworski
• Languages of publication: EN

Abstracts

EN

The results of modelling of the two-phase turbulent flow of a two-phase, liquid-liquid mixture in a Kenics static mixer were reported. Advanced transient simulations were performed using the large eddy simulation (LES) approach and a broader analysis of the velocity field was carried out. The two-phase flow was modelled employing the Eulerian approach in the pseudo-homogeneous version of the mixture model. Three cases were again considered, which differed by the density of the two phases and the simulations were performed for Reynolds number of 10,000. The LES results for the tangential and radial components were compared with those obtained in the steady-state RANS approach.

Keywords

EN

LES; liquid-liquid; turbulent flow; Kenics mixer

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2009
• Volume: 11
• Issue: 2
• Pages: 36-40

Dates

published

1 - 1 - 2009

online

19 - 6 - 2009

Contributors

author

Halina Murasiewicz

• Institute of Chemical Engineering and Environmental Protection Processes, West Pomeranian University of Technology, al. Piastow 42, 71-065 Szczecin, Poland

author

Zdzislaw Jaworski

• Institute of Chemical Engineering and Environmental Protection Processes, West Pomeranian University of Technology, al. Piastow 42, 71-065 Szczecin, Poland

References

• Godfrey, J. Static Mixers in the Process Industries, editors: Harnby N., Edwards M., Nienow A., Butterworth-Heinmann, USA, 1992, 225-249.
• Jaworski, Z., Murasiewicz, H. & Pianko-Oprych, P. Large Eddy Simulation of turbulent liquid-liquid flow in Kenics static mixers, Proc. 10th Intern. Conf. Multiphase Flow in Ind. Plant, 2006, Tropea, Italy.
• Jaworski, Z. & Murasiewicz, H. CFD of turbulent liquid-liquid flow in Kenics static mixers, Proc. 11th Intern. Conf. Multiphase Flow in Ind. Plant, 2008, Palermo, Italy.
• Byrde, O. & Sawley, M. Optimization of a Kenics static mixer for non-creeping flow conditions, Chemical Engineering Journal, 1999, 72, 163-169 [DOI:10.1016/S1385-8947(98)00145-4].[Crossref]
• Szalai, E.S. & Muzzio, F. Fundamental approach to the design and optimization of static mixers, Aiche J., 2003, 49, 11, 2687-2699 [DOI:10.1002/aic.690491103].[Crossref]
• Song, H. & Han, S. A general correlation for pressure drop in a Kenics static mixer, Chemical Engineering Science, 2005, 60, 5696-5704 [DOI:10.1016/j.ces.2005.04.084].[Crossref]
• Hobbs, D.M. & Muzzio, F. Optimization of a static mixer using dynamical system techniques, Chemical Engineering Science, 1998, 53, 18, 3199-3213 [DOI:10.1016/S0009-2509(98)00115-8].[Crossref]
• Jaworski, Z., Pianko-Oprych, P., Marchisio, D. & Nienow, A.W. Numerical modelling of turbulent drop breakage in a Kenics static mixer and comparison with experimental data, 12th European Conference on Mixing, 2006, Bologna, Italy.
• Pope, S. Turbulent Flows, 2000, Cambridge University Press, Cambridge.
• Hewitt, G.F. & Vassilicos J.C. Prediction of Turbulent Flows, 2005 Cambridge University Press.
• Jahoda, M., Mostek, M., Kukukova, A., Machon, V. CFD modelling of liquid homogenization in stirred tanks with one and two impellers using large eddy simulation, Chemical Engineering Research and Design, 2007, 85, A5, 616-625.[WoS]
• Bakker, A. & Oshinowo, L.M. Modelling of turbulence in stirred vessels using large eddy simulation, Chemical Engineering Research and Design, 2004, A9, 1169-1178 [DOI:10.1205/cerd.82.9.1169.44153].[Crossref]
• Hartmann, H., Derksen, J.J., Montavon, C., Pearson, J., Hamill, I.S. & van den Akker, H.E.A. Assessment of large eddy and RANS stirred tank simulations by means of LDA, Chemical Engineering Science, 2004, 59, 2419 [DOI:10.1016/j.ces.2004.01.065].[Crossref]
• van Wageningen, W., Kandhai, D., Mudde, R. & van den Akker, H. Dynamic flow in a Kenics static mixer: An assessment of various CFD methods, AIChE Journal, 2004, 50, 1684-1696 [DOI:10.1002/aic.10178].[Crossref]
• Liu, S.J., Hrymak, A.N. & Wood, P.E. Drop breakup in an SMX static mixer in laminar flow, Canadian Journal of Chemical Engineering, 2005, 83, 793-807.
• Rama Rao, N.V., Baird, M.H.I., Hrymak, A.N. & Wood, P.E. Dispersion of high-viscosity liquid-liquid systems by flow through SMX static mixer elements, Chemical Engineering Science, 2007, 62, 23, 6885-6896.[WoS]
• Sablani, S.S. et al. Handbook of food and bioprocess modeling techniques, 2007, CRC Press Taylor & Francis.
• Wilcox, D. Turbulence Modelling for CFD, 1993, DCW Industries, California.
• Launder, B. & Spalding, D. Mathematical Models of Turbulence, 1972, Academic Press Inc. London.

Identifiers

DOI

10.2478/v10026-009-0021-2