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Titolo:
STOCHASTIC-ANALYSIS OF MULTIPHASE FLOW IN POROUS-MEDIA .1. SPECTRAL PERTURBATION APPROACH
Autore:
CHANG CM; KEMBLOWSKI MW; KALUARACHCHI J; ABDIN A;
Indirizzi:
UTAH STATE UNIV,UTAH WATER RES LAB LOGAN UT 84322
Titolo Testata:
Stochastic hydrology and hydraulics
fascicolo: 3, volume: 9, anno: 1995,
pagine: 239 - 267
SICI:
0931-1955(1995)9:3<239:SOMFIP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNSATURATED FLOW; HETEROGENEOUS SOILS; TRANSPORT; MODEL;
Keywords:
STOCHASTIC ANALYSIS; MULTIPHASE FLOW; POROUS MEDIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
CompuMath Citation Index
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
C.M. Chang et al., "STOCHASTIC-ANALYSIS OF MULTIPHASE FLOW IN POROUS-MEDIA .1. SPECTRAL PERTURBATION APPROACH", Stochastic hydrology and hydraulics, 9(3), 1995, pp. 239-267

Abstract

Stochastic analysis of steady-state multiphase (water, oil, and air) Row in heterogeneous porous media was performed using the perturbationtheory and spectral representation techniques. The gas phase is assumed to have constant pressure. The governing equations describing the how of oil and water are coupled and nonlinear. The key stochastic input variables are intrinsic permeability, k, and the soil grain size distribution index, alpha. Three different stochastic combinations of these two input parameters were considered. The perturbation/spectral analysis was used to develop closed-form expressions that describe stochastic variability of key output processes, such as capillary and individual phase pressures and specific discharges. The analysis also included the derivation of the mean Row equations and estimation of the effective Row properties. The impact of the spatial variability of k and alpha on the effective conductivities and the variances of pressures and specific discharges was examined.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 06:15:37