Wall Effect Mitigation Techniques for Experiments with Planar Walls
Wall Effect Mitigation Techniques for Experiments with Planar Walls
复制标题
平面墙实验的墙效应缓解技术
DOI:
10.1007/s11242-020-01399-9
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发表时间:
2020
影响因子:
2.7
通讯作者:
Crimaldi, John P.
中科院分区:
文献类型:
--
作者:
Roth, Eric J.;Neupauer, Roseanna M.;Mays, David C.;Sather, Lauren J.;Crimaldi, John P.
Experiments in porous media suffer from preferential flow along apparatus walls—called thewall effect—which results from higher porosity and therefore higher permeability near the walls. Through a theoretical analysis of porosity in a three-dimensional rectangular apparatus containing spherical beads with hexagonal close packing, this study shows that porosity, and therefore wall effects, exhibits different behavior along each of the orthogonal walls. This study also experimentally evaluates two techniques for mitigating wall effects in experiments of solute transport in porous media using monodisperse, spherical beads in hexagonal close packing as the bulk porous medium. The first mitigation technique adds a sublayer of smaller beads of one third of the diameter of the primary beads between the wall and the bulk media. The second mitigation technique applies a half-bead-diameter-thick layer of silicone to the wall and embeds one layer of beads into the silicone, creating a wall of hemispheres. Both techniques seek to impose more uniform porosity up to the wall. Velocity profiles indicate that both techniques eliminate preferential flow along the wall and therefore are effective at mitigating the wall effect.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
J. Mcwhirter;M. Crawford;D. Klein
通讯作者:
D. Klein
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
G. Robbins
通讯作者:
G. Robbins
影响因子:
3.6
作者:
Werth, Charles J.;Zhang, Changyong;Brusseau, Mark L.;Oostrom, Mart;Baumann, Thomas
通讯作者:
Baumann, Thomas
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
J. Mcwhirter;M. Crawford;Dale E. Kleins
通讯作者:
Dale E. Kleins