ANALYSIS OF POSITION AND ROTATION DIRECTION OF DOUBLE STIRRER ON CHAOTIC ADVECTION BEHAVIOR

Keywords: chaotic mixer, chaotic mixing, viscous fluid, eccentricity, rotation direction, double stirrer

Abstract

Turbulent mixing can damage the material molecules because of turbulence. Whereas laminar mixing raises a problem when mixing is carried out on viscous liquids. The mixing mechanism using chaotic flow affects the mixing quality. The aim of the experiment was to determine the position and direction of the double stirrer chaotic mixer. The installation of a chaotic mixer uses a cylindrical tub and two different mixers consisting of a primary mixer (Pp) and a secondary mixer (Ps). Periodically rotate the container and stirrer. The center of the vessel and primary mixer are placed at the same coordinates. For ε=4 cm (Pp to Ps distance), there are three experiments, namely: vessel rotation and directional stirrer (P2S-a), vessel rotation and opposite stirrer (P2B-a), and vessel rotation, both primary and secondary stirrers are directional variations. (P2V-a). Eccentricity 7 cm, there are also three treatments as above: one direction (P2S-b), reverse direction (P2B-b), and variation of direction (P2V-b).

The video camera recordings are processed digitally. Qualitative data show a pattern of behavior during mixing. Meanwhile, quantitative data is used to determine the level of mixing effectiveness. The results showed that the direction of rotation of the two cylinders had no effect on the effectiveness of chaotic mixing. Based on the number of initial droplets of dye, the treatment that experienced the fastest chaos was P2B-b, at n=2 and r=3.5303. The difference in the number of color droplets does not affect chaotic behavior. The highest mixing efficiency was generated by the lowest P2V-b mixing index value of 0.94. Simultaneously, the direction between the mixer and the container will provide maximum mixing efficiency. Isolated mixing areas (island) and areas of poor mixing occur because of one-way rotation and low eccentricity

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Author Biographies

Sugeng Hadi Susilo, State Polytechnic of Malang

Department of Mechanical Engineering

Asrori Asrori, State Polytechnic of Malang

Department of Mechanical Engineering

References

Study on energy efficiency and energy saving potential in industry and on possible policy mechanisms. Contract No. ENER/C3/2012-439/S12.666002. Available at: https://ec.europa.eu/energy/sites/ener/files/documents/151201%20DG%20ENER%20Industrial%20EE%20study%20-%20final%20report_clean_stc.pdf
Kreczak, H. E. (2019). Rates of mixing in models of fluid devices with discontinuities. University of Leeds. Available: https://etheses.whiterose.ac.uk/26449/2/thesis-HKreczak.pdf
Topics on environmental and physical geodesy (2014). Dept. Fisica Aplicada UPC, Barcelona Tech. Available at: https://upcommons.upc.edu/bitstream/handle/2117/81242/Topics_in_Environmental_and_Physical_Geo%28Redondo%29.pdf?sequence=1&isAllowed=y
Sajid, M. (2013). Recent Developments on Chaos in Mechanical Systems. International Conference on Mechanical and Industrial Engineering, 218–221. Available at: https://www.researchgate.net/publication/262524523_Recent_Developments_on_Chaos_in_Mechanical_Systems
Dayan, N. (Ed.) (2016). Handbook of Formulating Dermal Applications. John Wiley & Sons, Inc. doi: https://doi.org/10.1002/9781119364221
Sivák, P., Delyová, I., Bocko, J., Šarloši, J. (2014). Some Methods of Analysis of Chaos in Mechanical Systems. American Journal of Mechanical Engineering, 2 (7), 199–203. doi: https://doi.org/10.12691/ajme-2-7-6
Speetjens, M., Metcalfe, G., Rudman, M. (2019). Lagrangian transport and chaotic advection in three-dimensional laminar flows. arXiv.org. Available at: https://arxiv.org/pdf/1904.07580.pdf
Gouillart, E. (2008). Chaotic mixing by rod-stirring devices in open and closed flows. HAL. Available at: https://tel.archives-ouvertes.fr/tel-00204109/document
Aref, H., Blake, J. R., Budišić, M., Cardoso, S. S. S., Cartwright, J. H. E., Clercx, H. J. H. et. al. (2017). Frontiers of chaotic advection. Reviews of Modern Physics, 89 (2). doi: https://doi.org/10.1103/revmodphys.89.025007
Gilpin, W. (2018). Cryptographic hashing using chaotic hydrodynamics. Proceedings of the National Academy of Sciences, 115 (19), 4869–4874. doi: https://doi.org/10.1073/pnas.1721852115
Furukawa, H., Kato, Y., Inoue, Y., Kato, T., Tada, Y., Hashimoto, S. (2012). Correlation of Power Consumption for Several Kinds of Mixing Impellers. International Journal of Chemical Engineering, 2012, 1–6. doi: https://doi.org/10.1155/2012/106496
Kusumastuti, A., Anis, S., Najibulloh, G. M. (2019). Taylor-Couette Column for Emulsion Liquid Membrane System: Characterisation Study. Jurnal Bahan Alam Terbarukan, 8 (1), 22–27. doi: https://doi.org/10.15294/jbat.v8i1.20162
Susilo, S. H., Suparman, S., Mardiana, D., Hamidi, N. (2016). The Effect of Velocity Ratio Study on Microchannel Hydrodynamics Focused of Mixing Glycerol Nitration Reaction. Periodica Polytechnica Mechanical Engineering, 60 (4), 228–232. doi: https://doi.org/10.3311/ppme.8894
Shirmohammadi, F., Tohidi, A. (2019). Experimental and numerical analysis of chaotic advection as an efficient approach to maximize homogeneous laminar mixing in a batch mixer. Brazilian Journal of Chemical Engineering, 36 (4), 1463–1473. doi: https://doi.org/10.1590/0104-6632.20190364s20180559
Dunn, M. J. (2008). Finite-Rate Chemistry Effects in Turbulent Premixed Combustion. University of Sydney. Available at: https://ses.library.usyd.edu.au/handle/2123/5782
Christidis, G. E. (2010). Industrial Clays. Advances in the Characterization of Industrial Minerals, 341–414. doi: https://doi.org/10.1180/emu-notes.9.9
Li, Y. (2002). Chaos in partial differential equations. Contemporary Mathematics, 93–115. doi: https://doi.org/10.1090/conm/301/05160
Van Gils, D. P. M., Huisman, S. G., Grossmann, S., Sun, C., Lohse, D. (2012). Optimal Taylor–Couette turbulence. Journal of Fluid Mechanics, 706, 118–149. doi: https://doi.org/10.1017/jfm.2012.236

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Published
2021-03-29
How to Cite
Susilo, S. H., & Asrori, A. (2021). ANALYSIS OF POSITION AND ROTATION DIRECTION OF DOUBLE STIRRER ON CHAOTIC ADVECTION BEHAVIOR. EUREKA: Physics and Engineering, (2), 78-86. https://doi.org/10.21303/2461-4262.2021.001707
Section
Engineering