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Compositional multiphase flow and transport in heterogeneous porous media

Abstract

This work first treats the conceptual models for the description of multiphase flow processes in porous media. The thermodynamic laws are explained and the description and quantification of multi-fluid equilibria are discussed in order to account for fluid composition. The fully and weakly coupled approaches for the mathematical description of such flow processes with respect to systems consisting of two and three fluid phases as well as with respect to compositional single and multiphase systems are assessed. For the discretization of the two-phase flow equations node- and cell-centered finite volume methods and mixed and mixed-hybrid finite element approaches are applied. Based upon these methods five solution algorithms are developed. Four of these algorithms are based on the simultaneous solution of the discretized equations in combination with the Newton-Raphson technique. Methods 1 and 2 treat two- three-phase flow processes, Method 3 applies to the solution of partially miscible three-component systems while Method 4 is created for three-phase three-component systems. The latter method uses a variable substitution dependent on the local presence of the fluid phases. Method 5 is based on the IMPES/IMPESC concept. The time-implicit pressure equation is discretized with the mixed-hybrid finite element method. The saturation and concentration equations, respectively,  More>>
Authors:
Publication Date:
Jul 01, 2000
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-929
Reference Number:
EDB-01:022406
Resource Relation:
Other Information: TH: Diss. (Dr.-Ing.); Summary in German; PBD: 2000; Related Information: Universitaet Stuttgart, Institut fuer Wasserbau. Mitteilungenv. 102
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; POROUS MATERIALS; MULTIPHASE FLOW; CAPILLARY FLOW; THERMODYNAMICS; MATHEMATICAL MODELS; ALGORITHMS; FINITE ELEMENT METHOD
OSTI ID:
20125121
Research Organizations:
Stuttgart Univ. (Germany). Inst. fuer Wasserbau; Technische Univ. Braunschweig (Germany). Fachbereich fuer Bauingenieurwesen
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ISBN 3-933761-05-0; ISSN 0343-1150; TRN: DE00GF736
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20125121
Submitting Site:
DE
Size:
201 pages
Announcement Date:

Citation Formats

Huber, R U. Compositional multiphase flow and transport in heterogeneous porous media. Germany: N. p., 2000. Web.
Huber, R U. Compositional multiphase flow and transport in heterogeneous porous media. Germany.
Huber, R U. 2000. "Compositional multiphase flow and transport in heterogeneous porous media." Germany.
@misc{etde_20125121,
title = {Compositional multiphase flow and transport in heterogeneous porous media}
author = {Huber, R U}
abstractNote = {This work first treats the conceptual models for the description of multiphase flow processes in porous media. The thermodynamic laws are explained and the description and quantification of multi-fluid equilibria are discussed in order to account for fluid composition. The fully and weakly coupled approaches for the mathematical description of such flow processes with respect to systems consisting of two and three fluid phases as well as with respect to compositional single and multiphase systems are assessed. For the discretization of the two-phase flow equations node- and cell-centered finite volume methods and mixed and mixed-hybrid finite element approaches are applied. Based upon these methods five solution algorithms are developed. Four of these algorithms are based on the simultaneous solution of the discretized equations in combination with the Newton-Raphson technique. Methods 1 and 2 treat two- three-phase flow processes, Method 3 applies to the solution of partially miscible three-component systems while Method 4 is created for three-phase three-component systems. The latter method uses a variable substitution dependent on the local presence of the fluid phases. Method 5 is based on the IMPES/IMPESC concept. The time-implicit pressure equation is discretized with the mixed-hybrid finite element method. The saturation and concentration equations, respectively, are solved with a cell-centered finite volume scheme. The developed algorithms are applied to the two- and three-phase Buckley-Leverett problems. A partitioning interwell tracer test is simulated. The propagation behavior of nonaqueous phase liquids (NAPLs) in the saturated and unsaturated ground zone under the influence of heterogeneities are examined. In addition, a larger-scale experiment is simulated, which involves an injection of trichloroethylene into the subsurface and the subsequent distribution. Here, the development of a dissolved contaminant plume as well as the behavior of organic vapors in the unsaturated zone are of interest. Finally, the application of the remediation technology alcohol flooding is numerically simulated. Most of the simulated physical processes in this work are based on experiments for which measurements exist, or, there are quasi-analytical solutions available. By use of the simulation results, the used conceptual models can be evaluated how well they represent the real physics. Furthermore, they can be used in order to determine the single processes which take place during a complex overall process. At the end, conclusions are drawn with regard to the applicability and peformance of the different approaches, and future developments are outlined. (orig.)}
place = {Germany}
year = {2000}
month = {Jul}
}