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Titolo:
HIGH-RESOLUTION MONTE-CARLO SIMULATION OF FLOW AND CONSERVATIVE TRANSPORT IN HETEROGENEOUS POROUS-MEDIA 1 - METHODOLOGY AND FLOW 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: 663 - 677
SICI:
0043-1397(1998)34:4<663:HMSOFA>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSFORM GALERKIN TECHNIQUE; SOLUTE TRANSPORT; STOCHASTIC-ANALYSIS; MASS-TRANSPORT; DISPERSION; AQUIFERS; MACRODISPERSION; CONDUCTIVITY; GROUNDWATER; GENERATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
R.L. Naff et al., "HIGH-RESOLUTION MONTE-CARLO SIMULATION OF FLOW AND CONSERVATIVE TRANSPORT IN HETEROGENEOUS POROUS-MEDIA 1 - METHODOLOGY AND FLOW RESULTS", Water resources research, 34(4), 1998, pp. 663-677

Abstract

In this, the first of two papers concerned with the use of numerical simulation to examine flow and transport parameters in heterogeneous porous media via Monte Carlo methods, various aspects of the modelling effort are examined. In particular, the need to save on core memory causes one to use only specific realizations that have certain initial characteristics; in effect, these transport simulations are conditionedby these characteristics. Also, the need to independently estimate length scales for the generated fields is discussed. The statistical uniformity of the flow field is investigated by plotting the variance of the seepage Velocity for vector components in the x, y, and z directions. Finally, specific features of the velocity field itself are illuminated in this first paper. In particular, these data give one the opportunity to investigate the effective hydraulic conductivity in a flow field which is approximately statistically uniform; comparisons are made with first-and second-order perturbation analyses. The mean cloud velocity is examined to ascertain whether it is identical to the mean seepage velocity of the model. Finally, the variance in the cloud centroid velocity Is examined for the effect of source size and differing strengths of local transverse dispersion.

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Documento generato il 03/12/20 alle ore 12:32:24