Peclet number dependent superdiffusive hydrodynamic dispersion in a site percolation porous media measured by NMR

被引：1
|
作者：
Seymour, Joseph D. [1 ]
Codd, Sarah L. [2 ]
Kimmich, Rainer [3 ]
机构：
[1] Montana State Univ, Dept Chem & Biol Engn, 306 Cobleigh Hall, Bozeman, MT 59717 USA
[2] Montana State Univ, Dept Mech & Ind Engn, 201 Roberts Hall, Bozeman, MT 59717 USA
[3] Univ Ulm, D-89069 Ulm, Germany
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2018年 / 269卷
基金：
美国国家科学基金会;
关键词：
PGSE NMR; Hydrodynamic dispersion; Site percolation; Superdiffusion; ANOMALOUS DIFFUSION; FIELD-GRADIENT; SPATIAL CORRELATIONS; TAYLOR DISPERSION; SPIN-ECHO; TRANSPORT; FLOW; NETWORKS; DYNAMICS; SYSTEMS;
D O I：
10.1016/j.micromeso.2017.04.057
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The displacement time dependent hydrodynamic dispersion in a model 2D site percolation structure is measured using PGSE NMR. The data indicate superdiffusive scaling of the mean squared displacement at high Peclet numbers, where advective transport dominates, consistent with classic percolation scaling concepts. The time scaling of the mean squared displacement is shown to vary with the Peclet number demonstrating a dependence on the changing dynamics. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码：56 / 59
页数：4
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