The Richards equation with hysteresis and degenerate capillary pressure
The Richards equation with hysteresis and degenerate capillary pressure
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具有滞后和简并毛细管压力的理查兹方程
DOI:
10.1016/j.jde.2012.01.026
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发表时间:
2012
影响因子:
2.4
通讯作者:
B. Schweizer
中科院分区:
文献类型:
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作者:
B. Schweizer
We study the Richards equation with a dynamic capillary pressure, including hysteresis. We provide existence and approximation results for degenerate capillary pressure curves pc, treating two cases. In the first case, the permeability function k can be degenerate, but the initial saturation does not take the critical values. In the second case, the permeability function k is strictly positive, but the capillary pressure function can be multi-valued. In both cases, the degenerate behavior of pcleads to the physically desired uniform bounds for the saturation variable. Our approach exploits maximum principles and relies on the corresponding uniform bounds for pressure and saturation. A new compactness result for the saturation variable allows to take limits in nonlinear terms. The solution concept uses tools of convex analysis.
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DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
B. Schweizer
通讯作者:
B. Schweizer
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Fulvia Buzzi;Michael Lenzinger;B. Schweizer
通讯作者:
B. Schweizer
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Lamacz;A. Rätz;B. Schweizer
通讯作者:
B. Schweizer
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
C. Cancès;C. Choquet;Yuanzhong Fan;I. Pop
通讯作者:
I. Pop
DOI:
--
发表时间:
1960
期刊:
影响因子:
--
作者:
G. Stampacchia
通讯作者:
G. Stampacchia