Stochastic analysis of contaminant transport
A reliability algorithm is used to develop probabilistic (stochastic) models or contaminant transport in porous media. The models are based on advective-dispersive transport equations, and utilize the reliability algorithm with existing one- and two-dimensional analytical and numerical solutions. Uncertain variables in the models include: groundwater flow velocity (or permeability in the numerical model), dispersivity, diffusion coefficient, bulk density, porosity, and solute distribution coefficient. Each uncertain variable is assigned a mean, covariance, and marginal distribution. The models yield an estimate of the probability that the contaminant concentration will equal or exceed a target concentration at a selected location and time. The models also yield probabilistic sensitivity measures which identify those uncertain variables with most influence on the probabilistic outcome. The objective of this study is to examine the basic behavior and develop general conclusions regarding transport under certain conditions as modeled using a reliability approach.
- Research Organization:
- Missouri Univ., Rolla, MO (United States). Dept. of Geological and Petroleum Engineering
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-89ER60828
- OSTI ID:
- 5827751
- Report Number(s):
- DOE/ER/60828-2; ON: DE92009610
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
58 GEOSCIENCES
580000 -- Geosciences
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BULK DENSITY
CONTAMINATION
DENSITY
DISPERSIONS
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FLOW MODELS
FLUID FLOW
GROUND WATER
HYDROGEN COMPOUNDS
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
PERMEABILITY
PHYSICAL PROPERTIES
POROSITY
POROUS MATERIALS
PROBABILISTIC ESTIMATION
PROGRESS REPORT
SOIL-STRUCTURE INTERACTIONS
VELOCITY
WATER