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MODELING THREE-DIMENSIONAL SUBSURFACE FLOW, FATE AND TRANSPORT OF MICROBES AND CHEMICALS (3DFATMIC)
Citation:
Cheng, J., G. Yeh, AND T. Short. MODELING THREE-DIMENSIONAL SUBSURFACE FLOW, FATE AND TRANSPORT OF MICROBES AND CHEMICALS (3DFATMIC). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-94/231 (NTIS PB95138210), 1994.
Description:
A three-dimensional model simulating the subsurface flow, microbial growth and degradation, microbial-chemical reaction, and transport of microbes and chemicals has been developed. he model is designed to solve the coupled flow and transport equations. asically, the saturated-unsaturated flow field is described by the well-known Richards' equation with variant hydraulic conductivity changing with microbial and chemical concentrations. even components, namely one substrate ' two electron acceptors, one nutrient, and three types of microbes, might exist in subsurface systems and compose seven simultaneous advective-dispersive-reactive transport equations. ince numerical problems may be introduced by using the conventional finite element method, the modified LagrangianEulerian numerical scheme with adapted zooming and peak capturing is applied to solving these seven nonlinear partial differential equations accurately. he results from the flow and transport parts affect each other. herefore, the coupling loop must be solved iteratively. o verify the developed model, this paper presents the simulation results of the published examples in the literature.
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MODELING THREE-DIMENSIONAL SUBSURFACE FLOW, FATE AND TRANSPORT OF MICROBES AND CHEMICALS (3DFATMIC)