Numerical simulation of single phase flow in a flotation machine

• Autorzy: Szczygieł I. , Fic A. , Sachajdak A. , Rojczyk M. , Buliński Z. , Mańka A.
• Języki publikacji: EN

Abstrakty

EN

In the paper, the numerical model of the flow phenomena in the flotation machine is presented. The process of flotation consists of a number of phenomena which provide serious numerical difficulties. One can enumerate rotation, two phase flow, foam formation etc. To the knowledge of authors there is no complete numerical model available for the flotation machine. The long-term task of the project is to create a complete model of the machine. Such a model would be very helpful in the process of construction and modernization of the flotation machine. As it was mentioned, due to difficulties connected with modelling the flotation phenomena, only a few aspects of the process were taken under consideration. In the paper, a single phase flow of water is considered. The efficiency of the flotation process strongly depends on the fluid flow field in the machine. The level of mixing the fractions and air bubbles strongly depends on the velocity field of the water, so the proper model of fluid flow is of great practical importance. This paper presents preliminary results of mathematical modelling. The commercial package ANSYS Fluent was utilized for the analysis. The results were compared with the measurements performed on the small scale model of the machine. Obtained results are satisfying and encouraging for further development.

Słowa kluczowe

EN

flotation; multiphase flow; numerical analysis; CFD; experiments; PIV measurement

PL

flotacja; przepływy wielofazowe; analiza numeryczna; CFD; doświadczenia; pomiar PIV

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Methods in Engineering and Science
• Rocznik: 2013
• Tom: Vol. 20, no. 2
• Strony: 145--156
• Opis fizyczny: Bibliogr. 10 poz., il., rys., wykr.

Twórcy

autor

Szczygieł I.

• Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland

autor

Fic A.

• Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland

autor

Sachajdak A.

• Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland

autor

Rojczyk M.

• Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland

autor

Buliński Z.

• Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland

autor

Mańka A.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

Bibliografia

• [1] ANSYS Fluent 12.1.4. Theory Guide, April 2009.
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• [4] M. Ishii, T. Hibiki. Thermo-Fluid Dynamics of Two-Phase Flow. Springer, New York, 2010.
• [5] P.T.L. Koh, M.P. Schwarz. CFD model of self-aerating flotation cell. Int. J. Mineral Process, 85 : 16–24, 2007.
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• [7] D. Ramkrishna. Population Balances: Theory and Applications to Particulate Systems in Engineering. Academic Press, 2000.
• [8] J.K. Sveen, E.A. Cowen. Quantitative imaging techniques and their application to wavy flow. In J. Grue, P.L.F. Liu, G.K. Pedersen [Eds.], PIV and Water Waves. World Scientific, 2004.
• [9] I. Szczygiel, A. Fic, A. Sachajdak, M. Rojczyk, Z. Bulinski. Numerical analysis of the water aeration in the flotation machine. Proc. of 10th World Congress on Computational Mechanics, Sao Paolo, Brasil, 2012.
• [10] J. Tiitinen, J. Vaarno, S. Grnstrand. Numerical modelling of an Outokumpu flotation device . 3th Int. Conf. on CFD in the Minerals and Process Industries, Melbourne, Australia, 2003.