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@ARTICLE{Suciu:53453,
author = {Suciu, N. and Vamos, C. and Vanderborght, J. and Hardelauf,
H. and Vereecken, H.},
title = {{N}umerical {I}nvestigations on {E}rgodicity of {S}olute
{T}ransport in {H}eterogeneous {A}quifers},
journal = {Water resources research},
volume = {42},
issn = {0043-1397},
address = {Washington, DC},
publisher = {AGU},
reportid = {PreJuSER-53453},
pages = {W04409},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {Darcy velocities for lognormal hydraulic conductivity with
small variance and finite correlation length were
approximated by periodic random fields. Accurate simulations
of two-dimensional advection-dispersion processes were
achieved with the global random walk algorithm, using 10(10)
particles in every transport realization. Reliable
statistical estimations were obtained by averaging over 256
realizations. The main result is a numerical evidence for
the mean square convergence of the actual concentrations to
the macrodispersion process predicted by a known limit
theorem. For small initial plumes the ergodic behavior can
be expected after thousands of advection timescales, when
the deviation from the theoretical prediction of the
cross-section space-averaged concentration monotonously
decays and falls under $20\%.$ The increase of the
transverse dimension of the initial plume slows down the
approach to the quasi-ergodic state and has a nonlinear
effect on the variability of the actual concentrations and
dispersivities.},
keywords = {J (WoSType)},
cin = {ICG-IV / JARA-ENERGY},
ddc = {550},
cid = {I:(DE-Juel1)VDB50 / $I:(DE-82)080011_20140620$},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Environmental Sciences / Limnology / Water Resources},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000237314000002},
doi = {10.1029/2005WR004546},
url = {https://juser.fz-juelich.de/record/53453},
}