A Study of Dispersed Phenomena on Rushton and Rushton V-CUT


  • Varit Kunopagarnwong Kasetsart University
  • Thongchai Rohitatisha Srinophakun Kasetsart University
  • Wisarut Manasthammakul




Computational fluid dynamics (CFD), Rushton impeller, Flow behavior


The flow behavior of liquid-solid particles in mixing tanks using a modified Rushton impeller, called a Rushton V-cut impeller, was studied. Both the Rushton and Rushton V-cut impellers were compared at a 300 rpm stirring speed and a 10 % wt solid concentration. Hydrodynamic behaviors, such as solid volume fraction, velocity, pressure, and shear stress, in both the Rushton and Rushton V-cut impellers were investigated. Computational fluid dynamics (CFD) software able to understanding of hydrodynamics of stirring liquids which contain solid particles. CFD programme was to predict the mixing flow of the highly viscous system. Therefore, the present work was carried out using CFD software with the Eulerian-Eulerian approach with a turbulent k-ε model. The simulation of mixing tanks was consisted of moving and stationary zones by using moving references frame method or MFR. The results were observed that Rushton V-cut can dramatically reduce pressure up to 20% and the shear stress up to 64.38% while keeping the liquid-solid mixing at a considerable degree. Therefore, this design can reduce the power consumption.


Fradette, L., P.A. Tanguy, F. Bertrand, F. Thibault, J.B. Ritz, E. Giraud, “CFD phenomenological model of solid–liquid mixing in stirred vesselsâ€, Comput. and Chem. Eng., vol. 31, no. 4, pp. 334-345, 2007.

Zheng, Y., X. Wan, Z. Qian, F. Wei, Y Jin, “Numerical simulation of the gas-particle turbulent flow in riser reactor based on two-fluid modelâ€, Chem. Eng. Sci., vol. 56 no. 24, pp. 6813-6822, 2001.

Zhou, L.X., L Li, R.X. Li, and J. Zhang: “Simulation of 3-D gas-particle flows and coal combustion in a tangentially fired furnace using a two-fluid-trajectory modelâ€, Powder Technol., vol. 125, pp. 226-233, 2012.

Das, A.K., J.D. Wilde, G.J. Heynderickx, G.B Marin, J. Vierendeels E. Dick, “CFD simulation of dilute phase gas-solid riser reactors: Part I – a new solution method and flow model validationâ€, Chem. Eng. Sci., vol. 59, no. 1, pp. 167-186, 2004.

Um, B.H., T.R. Hanley, “High-solid enzymatic hydrolysis and fermentation of solka floc into ethanolâ€, J. Microbiol. Biotechnol., vol. 18, no. 7, pp. 1257-1265, 2008.

Wadnerkar, D., M.O. Tade., V.K. Pareek, R.P. Utikar, “CFD simulation of solid-liquid stirred tanks for low dense solid loading systemsâ€, Particuology., vol. 29, pp. 16-33, 2016.

Politano, M.S., P.M. Carrica, J. Converti, “A model for turbulent poly-disperse two-phase flow in vertical channelsâ€, Int. J. Mulitph. Flow, vol. 29, no. 7, pp. 1153-1182, 2003.

Liu, B., H. Bolin, Z. Yanan, L. Jingliang, J. Zhijiang, “Numerical study on gas dispersion characteristics of a coaxial mixer with viscous fluidsâ€, J. Taiwan Inst. Chem. Eng., vol. 66, pp. 54-61, 2016.

Chandratilleke, G.R.., A.B. Yu, J. Bridgwater, “A DEM study of mixing of particles induced by a flat bladeâ€, Chem. Eng. Sci., vol. 79, pp. 54-74, 2012.

Mousavi, S.M., P. Zamankhan, A. Jafari, “Computer simulations of sodium formate solution in a mixing tankâ€, Commun. Nonlinear Sci. Numer. Simul., vol. 13, no. 2, pp. 380-399, 2008.

Liu, B., Y. Zhang, Y. Zheng, B. Huang, X. Chen, Z. Jin, “Micromixing simulation of novel large-double-blade impellerâ€, J. Taiwan Inst. Chem. Eng., vol. 66, pp. 62-69, 2016.

Deglon, D.A., C.J. Meyer, “CFD modeling of stirred tanks: Numerical considerationsâ€, Miner Eng., vol. 19, no.10, pp. 1059-1068, 2006.

Kasat, G.R., A.R. Khopkar, V.V. Ranade, A.B. Pandit, “CFD simulation of liquid-phase mixing in solid-liquid stirred reactorâ€, Chem. Eng. Sci., vol. 63, no. 15, pp. 3877-3885, 2008.

Ameur, H, “Mixing of complex fluids with flat and pitched bladed impeller: Effect of blade attack attack angle and shear thinning behaviorâ€, Food Bioprod. Process., vol. 99, pp. 71-77, 2016.

Gidaspow, D., R. Bezburuah, J. Ding, “Hydrodynamics of Circulating Fluidized Beds, Kinetic Theory Approachâ€, In Fluidization VII, Proceedings of the 7th Engineering Foundation Conference on Fluidization, 1992.

Lassaigne, M., B. Blais, L. Fradette, F. Bertrand, “Experimental investigation of the mixing of viscous liquids and non-dilute concentrations of particles in stirred tankâ€, Chem. Eng. Res. Des., vol. 108, pp. 55-68, 2016.

Mishra, P., and F. Ein-Mozaffari, “Using computational fluid dynamics to analyze the performance of the maxbland impeller in solid-liquid mixing operationsâ€, Int. J. Multiphase Flow, vol. 91, pp. 194-207, 2017.

Raj, R.T.K., A.D. Singh, S. Tare, S. Varma, S Varma, “Study of fluid Flow around Impeller Blades in Rushton turbine in a Baffled Vessel using Computational Fluid Dynamicsâ€, ARPN Journal of Engineering and Applied Sciences, vol. 9, no. 5, pp. 659-666, 2014.


Additional Files



How to Cite

Kunopagarnwong, V., Srinophakun, T. R., & Manasthammakul, W. (2018). A Study of Dispersed Phenomena on Rushton and Rushton V-CUT. Asian Journal of Applied Sciences, 6(4). https://doi.org/10.24203/ajas.v6i4.5428




Most read articles by the same author(s)