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Titolo:
HIGH-RESOLUTION MONTE-CARLO SIMULATION OF FLOW AND CONSERVATIVE TRANSPORT IN HETEROGENEOUS POROUS-MEDIA 2 - TRANSPORT RESULTS
Autore:
NAFF RL; HALEY DF; SUDICKY EA;
Indirizzi:
US GEOL SURVEY,DIV WATER RESOURCES,MS 413,BOX 25046 DENVER CO 80235 UNIV WATERLOO,WATERLOO CTR GROUNDWATER RES WATERLOO ON N2L 3G1 CANADA
Titolo Testata:
Water resources research
fascicolo: 4, volume: 34, anno: 1998,
pagine: 679 - 697
SICI:
0043-1397(1998)34:4<679:HMSOFA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
FICKIAN SUBSURFACE DISPERSION; QUASI-LINEAR THEORY; SOLUTE TRANSPORT; NUMERICAL-SIMULATION; STOCHASTIC-ANALYSIS; AQUIFERS; MACRODISPERSION; GROUNDWATER; MOMENTS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
R.L. Naff et al., "HIGH-RESOLUTION MONTE-CARLO SIMULATION OF FLOW AND CONSERVATIVE TRANSPORT IN HETEROGENEOUS POROUS-MEDIA 2 - TRANSPORT RESULTS", Water resources research, 34(4), 1998, pp. 679-697

Abstract

In this, the second of two papers concerned with the use of numericalsimulation to examine flow and transport parameters in heterogeneous porous media via Monte Carlo methods, results from the transport aspect df these simulations are reported on. Transport simulations contained herein assume a finite pulse input of conservative tracer, and the numerical technique endeavors to realistically simulate tracer spreading as the cloud moves through a heterogeneous medium. Medium heterogeneity is limited to the hydraulic conductivity held, and generation of this field assumes that the hydraulic-conductivity process is second-order stationary. Methods of estimating cloud moments, and the interpretation of these moments, are discussed. Techniques for estimation of large-time macrodispersivities from cloud second-moment data, and for the approximation of the standard errors associated with these macrodispersivities, are also presented. These moment and macrodispersivity estimation techniques were applied to tracer clouds resulting from transport scenarios generated by specific Monte Carlo simulations. Where feasible, moments and macrodispersivities resulting from the Monte Carlo simulations are compared with first-and second-order perturbation analyses. Some limited results concerning the possible ergodic nature of these simulations, and the presence of non-Gaussian behavior of the mean cloud, are reported on as well.

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Documento generato il 27/11/20 alle ore 02:09:31