One-dimensional subsurface transport of a nonaqueous phase liquid containing sparingly water soluble organics: A front-tracking model
- Univ. of California, Los Angeles (United States)
A one-dimensional multiphase mass transport model for the migration of a nonaqueous phase liquid (NAPL) containing sparingly water soluble organics in the unsaturated soil zone is described. The multiphase NAPL transport (MUNT) model consists of a two-phase immiscible flow model linked to a four-phase chemical transport model. The immiscible flow model incorporates a front-tracking algorithm to determine the front of the invading NAPL as a function of penetration time. The NAPL penetration toward groundwater is shown to be a function of four dimensionless groups: NAPL capillary number, the ratio of the NAPL Reynolds number to the NAPL Froude number, and the ratio of the defending phase to NAPL phase densities and viscosities. Simulations for the migration of organic chemicals show that their concentration in the air and aqueous phases past the front can be significant.
- OSTI ID:
- 5884883
- Journal Information:
- Water Resources Research; (United States), Journal Name: Water Resources Research; (United States) Vol. 27:7; ISSN 0043-1397; ISSN WRERA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
58 GEOSCIENCES
580000 -- Geosciences
ALGORITHMS
COMPUTERIZED SIMULATION
ENVIRONMENTAL TRANSPORT
FLOW MODELS
FLUID FLOW
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
MASS TRANSFER
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
NONAQUEOUS SOLVENTS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLUMES
POLLUTANTS
POLLUTION
SIMULATION
SOLVENTS
WATER
WATER POLLUTION