| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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An Immersed Boundary-Lattice Boltzmann Prediction for Particle Hydrodynamic Focusing in Annular Microchannels |
| Tao HU1, Meng-Dan HU2, Si-si Zhou3, Dong-Ke SUN1** |
1School of Mechanical Engineering, Southeast University, Nanjing 211189
2School of Materials Science and Engineering, Southeast University, Nanjing 211189
3School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189
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| Cite this article: |
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Tao HU, Meng-Dan HU, Si-si Zhou et al 2018 Chin. Phys. Lett. 35 108101 |
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Abstract We numerically study the dynamics of particle crystals in annular microchannels by the immersed-boundary (IB) lattice Boltzmann (LB) coupled model, analyze the fluid-particle interactions during the migration of particles, and reveal the underlying mechanism of a particle focusing on the presence of fluid flows. The results show that the Reynolds and Dean numbers are key factors influencing the hydrodynamics of particles. The particles migrate onto their equilibrium tracks by adjusting the Reynolds and Dean numbers. Elliptical tracks of particles during hydrodynamic focusing can be predicted by the IB-LB model. Both the small Dean number and the small particle can lead to a small size of the focusing track. This work would possibly facilitate the utilization of annular microchannel flows to obtain microfluidic flowing crystals for advanced applications in biomedicine and materials synthesis.
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Received: 11 June 2018
Published: 15 September 2018
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| PACS: |
81.10.Aj
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(Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
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81.30.Fb
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(Solidification)
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47.11.-j
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(Computational methods in fluid dynamics)
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47.54.-r
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(Pattern selection; pattern formation)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 51728601 and 51771118, and the Natural Science Foundation of Jiangsu Province under Grant No BK20150600. |
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| [1] | Di Carlo D, Irimia D, Tompkins R G and Toner M 2007 Proc. Natl. Acad. Sci. USA 104 18892 | | [2] | Raven J P and Marmottant P 2009 Phys. Rev. Lett. 102 084501 | | [3] | Pamme N 2007 Lab Chip 7 1644 | | [4] | Lee W, Amini H, Stone H A and Di Carlo D 2010 Proc. Natl. Acad. Sci. USA 107 22413 | | [5] | Sun J F, Dong J, Sun D K, Guo Z R and Gu N 2012 Langmuir 28 6520 | | [6] | Schmidle H, Jäger S, Hall C K, Velev O D and Klapp S H L 2013 Soft Matter 9 2518 | | [7] | Chun B and Ladd T 2006 Phys. Fluids 18 136 | | [8] | Sun D K, Jiang D, Xiang N, Chen K and Ni Z H 2013 Chin. Phys. Lett. 30 074702 | | [9] | Kulkarni P M and Morris J F 2008 Phys. Fluids 20 545 | | [10] | Qi D W, He G W and Liu Y M 2013 Phys. Fluids 25 093302 | | [11] | Gossett D R and Di Carlo D 2009 Anal. Chem. 81 8459 | | [12] | Peskin C S 2002 Acta Numer. 11 479 | | [13] | Skalak R, Tozeren A, Zarda R and Chien S 1973 Biophys. J. 13 245 | | [14] | Shrivastava S and Tang J 1993 J. Strain Anal. 28 31 | | [15] | Sui Y, Chew Y T, Roy P and Low H T 2008 J. Comput. Phys. 227 6351 | | [16] | Krüger T 2011 PhD Dissertation (Germany: Ruhr-Universität Bochum) | | [17] | Seifert U 1997 Adv. Phys. 46 13 | | [18] | Sun D K and Bo Z 2015 Int. J. Heat Mass Transfer 80 139 | | [19] | Sun D K, Wang Y, Dong A P and Sun B D 2016 Int. J. Heat Mass Transfer 94 306 | | [20] | Wong K L and Baker A J 2002 Int. J. Numer. Methods Fluids 38 99 |
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