Pressure-driven pipe flow of semi-dilute and dense suspensions over permeable surfaces
Pressure-driven pipe flow of semi-dilute and dense suspensions over permeable surfaces
复制标题
半稀和浓悬浮液在渗透表面上的压力驱动管流
DOI:
10.1007/s00397-021-01298-w
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发表时间:
2021
期刊:
影响因子:
2.3
通讯作者:
Mirbod, Parisa
中科院分区:
文献类型:
--
作者:
Kang, Changwoo;Mirbod, Parisa
We study pressure-driven suspensions of non-colloidal, non-Brownian, and rigid spheres in a Newtonian solvent where the pipe surface is replaced by porous media using numerical simulations. We examine various values of the permeability of the porous mediumK, while we keep the porosity and the thickness of the porous layer constant to clarify the effect of the permeable wall on the suspension flows at bulk particle volume fractions 0.1 ≤ϕb≤ 0.5. In the limit of vanishing inertia, the rate of suspension flow decreases as the bulk volume fractionϕbincreases and it builds up as the permeability of the porous media increases. There are also two different regimes characterizing the dimensionless slip velocity normalized by both shear rate and penetration depth, namely, the strong permeability regime and the weak permeability regime. In the former, the solvent penetrates deeper and the streamwise velocity at the interface increases with the porous media permeability, while in the latter, the fluid cannot go through the porous media deeply and the variation of the slip velocity with the permeability is small. Our results might suggest a new passive technique to reduce drag by enhancing the rate of suspension flow in devices where the suspension transport is crucial. It might also offer basic insights for the extension to the flow of suspensions over and through complex porous media.Graphical abstract
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影响因子:
4.7
作者:
Rosti, Marco E.;Mirbod, Parisa;Brandt, Luca
通讯作者:
Brandt, Luca
影响因子:
4.6
作者:
Wu, Zhenxing;Mirbod, Parisa
通讯作者:
Mirbod, Parisa
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
Z. Fang;A. Mammoli;J. Brady;M. Ingber;L. Mondy;A. Graham
通讯作者:
A. Graham
影响因子:
4.6
作者:
Mirbod P;Wu Z;Ahmadi G
通讯作者:
Ahmadi G
影响因子:
3.3
作者:
Hampton, RE;Mammoli, AA;Altobelli, SA
通讯作者:
Altobelli, SA