Impacts of particle shape on sedimentation of particles

نویسندگان

چکیده

The effects of particle shape on settling behavior sand particles under the influence gravity in an initially quiescent water environment have been studied by a two-dimensional high-resolution numerical experiment. method is based immersed boundary method. accuracy code well demonstrated against experimental data fluttering rectangular plate. either elliptical or size about 1 mm, and aspect ratio varied without changing volume. particle-to-fluid density chosen to be 2.65, resulting Galileo number 127. It found that terminal velocity tends decrease with increase rectangle always lower than corresponding ellipse both isolated multiple systems. While presence surrounding makes less clear, circular still presents significant differences compared other particles. It, therefore, calls for caution spherical assumption encourages deeper understanding effects.

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ژورنال

عنوان ژورنال: European Journal of Mechanics B-fluids

سال: 2021

ISSN: ['1873-7390', '0997-7546']

DOI: https://doi.org/10.1016/j.euromechflu.2021.06.007