Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/5998824 |
| 报告编号 | ORNL-6386 |
| 来源ID | OSTI_ID: 5998824 |
| 3DFEMWATER: A three-dimensional finite element model of water flow through saturated-unsaturated media | |
| Yeh, G.T. | |
| 英文摘要 | The 3DFEMWATER model is designed to treat heterogeneous and anisotropic media consisting of as many geologic formations as desired, consider both distributed and point sources/sinks that are spatially and temporally dependent, accept the prescribed initial conditions or obtain them by simulating a steady state version of the system under consideration, deal with a transient head distributed over the Dirichlet boundary, handle time-dependent fluxes due to pressure gradient varying along the Neumann boundary, treat time-dependent total fluxes distributed over the Cauchy boundary, automatically determine variable boundary conditions of evaporation, infiltration, or seepage on the soil-air interface, include the off-diagonal hydraulic conductivity components in the modified Richards equation for dealing with cases when the coordinate system does not coincide with the principal directions of the hydraulic conductivity tensor, give three options for estimating the nonlinear matrix, include two options (successive subregion block iterations and successive point interactions) for solving the linearized matrix equations, automatically reset time step size when boundary conditions or source/sinks change abruptly, and check the mass balance computation over the entire region for every time step. The model is verified with analytical solutions or other numerical models for three examples. |
| 出版年 | 1987 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; 54 ENVIRONMENTAL SCIENCES ; GROUND WATER ; FLOW RATE ; NUMBER CODES ; WATER SATURATION ; GEOLOGIC STRUCTURES ; MANUALS ; MATHEMATICAL MODELS ; POROUS MATERIALS ; COMPUTER CODES ; DOCUMENT TYPES ; HYDROGEN COMPOUNDS ; MATERIALS ; OXYGEN COMPOUNDS ; SATURATION ; WATER 052002* -- Nuclear Fuels-- Waste Disposal & Storage ; 053000 -- Nuclear Fuels-- Environmental Aspects ; 510100 -- Environment, Terrestrial-- Basic Studies-- (-1989) ; 520100 -- Environment, Aquatic-- Basic Studies-- (-1989) |
| URL | http://www.osti.gov/scitech/servlets/purl/5998824 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/263928 |
| 推荐引用方式 GB/T 7714 | Yeh, G.T.. 3DFEMWATER: A three-dimensional finite element model of water flow through saturated-unsaturated media,1987. |
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