CFD Simulation of Disc Radius and Blade Height Effects on Mixing Performance in the Unbaffled Tank Covered by a Lid
Keywords:
CFD,, Unbaffled Tank,, disc radius,, blade heightAbstract
The stirred tank is a general device in mixing processes. The aim of this work is to investigate the effect of disc radius and blade height on mixing performance by using CFD technique. The preliminary simulated results were validated by comparing with experimental data. The simulated results revealed that the shortest mixing time, which is depended on impeller geometry, average velocities, and ratio of k/ε, and minimum power can be achieved by 1b-disc3/4 (10.72 seconds) and 1b-disc1 (0.4892 watts), respectively. In order to investigate the correct optimal stirred tank, the mixing energy was conducted because the mixing time and power are combined into single parameter. In view of mixing energy, the optimal stirred tank was
1b-disc3/4 because of its lowest energy.
References
[2] A. Ochieng, M. S. Onyango, A. Kumar, K. Kiriamiti, and P. Musonge “Mixing in a tank stirred by a Rushton turbine at a low clearance”,Chemical Engineering and Processing, vol. 47, No.5, pp.842–851, 2008
[3] H. Ameur and M. Bouzit “Numerical investigation of flow induced by a disc turbine in unbaffled stirred tank”, Acta Scientiarum Technology, July-Sept, pp. 469-476, 2013
[4] R. Alcamo, G. Micale, F. Grisafi, A. Brucato, and M. Ciofalo “Large-eddy simulation of turbulent flow in an unbaffled stirred tank driven by a Rushton turbine”, Journal of Chemical Engineering Science, vol.60, pp. 2303 – 2316, 2005
[5] C. Vella, F. Grisafi, G. Micale, L. Rizzuti,and A. Brucato, “Near impeller flow field in an unbaffled stirred tank”, Proceedings of the 11th European Conference on Mixing, preprint VDI-GVD Bamberg, 14–17 October, pp. 629–636, 2003
[6] C. Akavipat, “Computational fluid dynamics study on effects of impeller Geometries on flow pattern in stirred tank,” Master of Chemical Engineering Thesis, faculty of engineering King mongkut’s institute of technology ladkrabang, 2014.
Downloads
Published
How to Cite
Issue
Section
License
The published articles are copyrighted by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang.
The statements contained in each article in this academic journal are the personal opinions of each author and are not related to King Mongkut's Institute of Technology Ladkrabang and other faculty members in the institute.
Responsibility for all elements of each article belongs to each author; If there are any mistakes, each author is solely responsible for his own articles.