Linear stability of one-dimensional non-Darcy flow in broken rocks

被引:1
|
作者
Zhao, Moli [1 ,2 ]
Wang, Shaowei [1 ,2 ,3 ]
Zhang, Qiangyong [1 ]
Li, Shucai [1 ]
机构
[1] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250061, Peoples R China
[2] Shandong Univ, Sch Civil Engn, Dept Engn Mech, Jinan 256601, Peoples R China
[3] Univ Alabama, Dept Geol Sci, Tuscaloosa, AL 35487 USA
基金
中国国家自然科学基金;
关键词
broken rocks; non-Darcy flow; normal mode method; linear stability analysis; SATURATED POROUS-MEDIA; DISSOLUTION FRONT INSTABILITY; MORPHOLOGICAL EVOLUTION; CONVECTIVE INSTABILITY; NUMERICAL-ANALYSES; FLUID; SHAPES; FAULT;
D O I
10.1002/nag.2349
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Considering the effect of non-Darcy flow, the perturbation theory and normal mode method are introduced to analyze the linear stability of one-dimensional non-Darcy flow of gases in broken rocks. A stability criterion for linear systems is obtained theoretically when the steady states of pressure and velocity fields are perturbed, and the effects of the physical parameters on the linear governing system are studied theoretically and numerically. It is pointed out that the deviation coefficient from Darcy's law plays an important role in the governing system; the increasing absolute value of deviation coefficient from Darcy's law stabilizes the system, and the numerical results are shown graphically. Copyright (c) 2015 John Wiley & Sons, Ltd.
引用
收藏
页码:1063 / 1072
页数:10
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