Premium
Modeling of multiphase multicontaminant transport in the subsurface
Author(s) -
Russell Thomas F.
Publication year - 1995
Publication title -
reviews of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 8.087
H-Index - 156
eISSN - 1944-9208
pISSN - 8755-1209
DOI - 10.1029/95rg00289
Subject(s) - component (thermodynamics) , focus (optics) , grid , computer science , multiphase flow , mathematical model , petroleum engineering , work (physics) , coupling (piping) , phase (matter) , reservoir simulation , phase equilibrium , geology , management science , biochemical engineering , mechanics , mathematics , thermodynamics , chemistry , physics , materials science , engineering , statistics , geodesy , optics , metallurgy , organic chemistry
This review addresses modeling of subsurface hydrological systems in which contaminants are transported in more than one fluid phase. The primary focus is on problems involving nonaqueous‐phase liquids (NAPLs), a dynamic gas phase, or both, so that the unsaturated and saturated zones are both discussed. Basic research in simpler settings is included if it develops concepts that could be applied in modeling of such problems. Recent developments in practical models are reviewed, along with experimental work and theoretical issues related to the formulation of mathematical models. It will be seen that the extent of validity of the local equilibrium assumption (LEA) for component partitioning among phases is a major question influencing the direction of these formulations. Also emphasized are upscaling to macroscopic and grid lengths, and the choice and coupling of primary variables in multicomponent systems. Relations to and possible use of developments in petroleum reservoir simulation are discussed.