Lagrangian simulation and analysis of the power-law fluid mixing in the two-blade circular mixers using a modified WCSPH method

R. Shamsoddini; M. Sefid

doi:10.1515/pjct-2015-0021

Lagrangian simulation and analysis of the power-law fluid mixing in the two-blade circular mixers using a modified WCSPH method

Shamsoddini, R., Sefid, M.

Source

Polish Journal of Chemical Technology > 2015 > Vol. 17, nr 2 > 1--10

Abstract

In the present study, we introduce a robust modified Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method in order to examine miscible mixing within a two-blade paddle mixer. Since it has a Lagrangian nature and it is based on particles, Smoothed Particle Hydrodynamics (SPH) is an appropriate and convenient method for simulating the moving boundary problems and tracking the particles in the mixing process. The present study thus introduces a convenient SPH method for modelling the mixing process for the power-law fluids. Two geometries for the mixer are examined and the effects of the power-law index on the fluid mixing are investigated. The results show that the geometric change from circular chamber to twin chamber considerably increases the mixing rate (by at least 49%). The results also indicate that the twin chamber mixer is more efficient for the fluids with higher power-law index.

Identifiers

journal ISSN :	1509-8117
journal e-ISSN :	1899-4741
DOI	10.1515/pjct-2015-0021

Authors

Shamsoddini, R.

Sirjan University of Technology, Department of mechanical engineering, Sirjan, Iran, Postal code: 7813733385

Sefid, M.

Yazd University, School of Mechanical Engineering, Yazd, Postal Code: 89195-741

Keywords

two-blade mixer twin chamber Lagrangian power law

Additional information

Publication languages: English

Data set: BazTech

Publisher

West Pomeranian University of Technology. Publishing House

Fields of science

No field of science has been suggested yet.

Bibliography

1. Peryt-Stawiarska, S. & Jaworski, Z. (2008). Fluctuations of the non-Newtonian fluid flow in a Kenics static mixer:An experimental study. Pol. J. Chem. Tech. 10(3), 35-37. DOI: 10.2478/v10026-008-0033-3.
2. Lai, A.C.K. & Chen, F.Z. (2007). Comparison of a new Eulerian model with a modified Lagrangian approach for particle distribution and deposition indoors. Atmos. Environ. 41(25), 5249-5256. DOI: 10.1016/j.atmosenv.2006.05.088.
3. Zhang, X. & Ahmadi, G. (2005). Eulerian-Lagrangian simulations of liquid-gas-solid fl ows in three-phase slurry reactors. Chem. Eng. Sci. 60(18), 5089-5104. DOI: 10.1016/j. ces.2005.04.033.

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Shamsoddini, R.

Sefid, M.

Keywords

Additional information

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Fields of science

Fields of science

Bibliography

1. Peryt-Stawiarska, S. & Jaworski, Z. (2008). Fluctuations of the non-Newtonian fluid flow in a Kenics static mixer:An experimental study. Pol. J. Chem. Tech. 10(3), 35-37. DOI: 10.2478/v10026-008-0033-3.

2. Lai, A.C.K. & Chen, F.Z. (2007). Comparison of a new Eulerian model with a modified Lagrangian approach for particle distribution and deposition indoors. Atmos. Environ. 41(25), 5249-5256. DOI: 10.1016/j.atmosenv.2006.05.088.

3. Zhang, X. & Ahmadi, G. (2005). Eulerian-Lagrangian simulations of liquid-gas-solid fl ows in three-phase slurry reactors. Chem. Eng. Sci. 60(18), 5089-5104. DOI: 10.1016/j. ces.2005.04.033.

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Lagrangian simulation and analysis of the power-law fluid mixing in the two-blade circular mixers using a modified WCSPH method