On the self-averaging of dispersion for transport in quasi-periodic random media
On the self-averaging of dispersion for transport in quasi-periodic random media
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准周期随机介质中传输色散的自平均
DOI:
10.1088/1751-8113/40/4/002
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
C. Vamos (2007).
中科院分区:
文献类型:
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作者:
IH Eberhard. J.. N. Suciu;C. Vamos (2007).
In this study we present a numerical analysis for the self-averaging of the longitudinal dispersion coefficient for transport in heterogeneous media. This is done by investigating the mean-square sample-to-sample fluctuations of the dispersion for finite times and finite numbers of modes for a random field using analytical arguments as well as numerical simulations. We consider transport of point-like injections in a quasi-periodic random field with a Gaussian correlation function. In particular, we focus on the asymptotic and pre-asymptotic behaviour of the fluctuations with the aid of a probability density function for the dispersion, and we verify the logarithmic growth of the sample-to-sample fluctuations as earlier reported in Eberhard (2004 J. Phys. A: Math. Gen. 37 2549–71). We also comment on the choice of the relevant parameters to generate quasi-periodic realizations with respect to the self-averaging of transport in statistically homogeneous Gaussian velocity fields.
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DOI:
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发表时间:
2001
期刊:
影响因子:
--
作者:
M. Clincy;H. Kinzelbach
通讯作者:
H. Kinzelbach
影响因子:
5.4
作者:
Suciu N.. C. Vamos;J. Vanderborght. H. Hardelauf;H. Vereecken (2006).
通讯作者:
H. Vereecken (2006).
DOI:
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发表时间:
2004
期刊:
影响因子:
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作者:
J. Eberhard
通讯作者:
J. Eberhard
影响因子:
5.4
作者:
M. Dentz;H. Kinzelbach;S. Attinger;W. Kinzelbach
通讯作者:
W. Kinzelbach
DOI:
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发表时间:
1989
期刊:
影响因子:
--
作者:
E. Guyon;C. Mitescu;J. Hulin;S. Roux
通讯作者:
S. Roux