Designing non-segregating granular mixtures
Designing non-segregating granular mixtures
复制标题
设计非分离颗粒混合物
DOI:
10.1051/epjconf/202124903011
复制
发表时间:
2021
影响因子:
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通讯作者:
Lueptow, Richard M.
中科院分区:
文献类型:
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作者:
Duan, Yifei;Umbanhowar, Paul B.;Lueptow, Richard M.
In dense flowing bidisperse particle mixtures varying in size or density alone, large particles rise (driven by percolation) and heavy particles sink (driven by buoyancy). When the two particle species differ from each other in both size and density, the two segregation mechanisms either enhance (large/light and small/heavy) or oppose (large/heavy and small/light) each other. In the latter case, an equilibrium condition exists in which the two mechanisms balance and the particles no longer segregate. This leads to a methodology to design non-segregating particle mixtures by specifying particle size ratio, density ratio, and mixture concentration to achieve the equilibrium condition. Using DEM simulations of quasi-2D bounded heap flow, we show that segregation is significantly reduced for particle mixtures near the equilibrium condition. In addition, the rise-sink transition for a range of particle size and density ratios matches the predictions of the combined size and density segregation model.
DOI:
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发表时间:
2020
期刊:
影响因子:
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作者:
A. Isner;P. Umbanhowar;J. Ottino;Richard M. Lueptow
通讯作者:
Richard M. Lueptow
DOI:
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发表时间:
2004
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
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作者:
G. Félix;N. Thomas
通讯作者:
N. Thomas