Long term sedimentation of an elliptic disc subject to an electrostatic field using smoothed particle hydrodynamics method

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Tofighi, N. and Feng, J. J. and Yıldız, Mehmet and Suleman, A. (2021) Long term sedimentation of an elliptic disc subject to an electrostatic field using smoothed particle hydrodynamics method. International Journal of Multiphase Flow, 135 . ISSN 0301-9322 (Print) 1879-3533 (Online)

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Abstract

A two dimensional incompressible smoothed particle hydrodynamics scheme for long term sedimentation of rising or falling particulates (bubbles, drops or rigid particles) in Newtonian fluids is presented and validated by simulating the sedimentation of a single elliptic disc. The proposed method is then used to simulate the sedimentation of an elliptic disc subject to an external electric field parallel to the gravitational field. A range of electric field intensities, permittivity ratios, blockage ratios and density ratios are covered in this study. The results show that for given blockage and density ratios, the final sedimentation orientation of the ellipse is dependent on a combination of permittivity ratio and electric field intensity, ranging from horizontal to vertical. Compared to non-electrified sedimentation, an increase in electric field intensity and permittivity ratio lead to vertical sedimentation. As the channels grow wider, the presence of electric field leads to faster ellipse descent, regardless of its initial orientation.
Item Type: Article
Uncontrolled Keywords: Electric field; Fluid-particle interaction; Sedimentation; Shifting boundary; Smoothed particle hydrodynamics
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences > Academic programs > Manufacturing Systems Eng.
Faculty of Engineering and Natural Sciences
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Mehmet Yıldız
Date Deposited: 19 Aug 2022 11:45
Last Modified: 19 Aug 2022 11:45
URI: https://research.sabanciuniv.edu/id/eprint/43265

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