Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/139248 |
| 报告编号 | SAND--88-7054; LBL--26224 |
| 来源ID | OSTI_ID: 139248 |
| Processes, mechanisms, parameters, and modeling approaches for partially saturated flow in soil and rock media; Yucca Mountain Site Characterization Project | |
| Wang, J.S.Y.; Narasimhan, T.N. [Lawrence Berkeley Lab., CA (United States)] | |
| 英文摘要 | This report discusses conceptual models and mathematical equations, analyzes distributions and correlations among hydrological parameters of soils and tuff, introduces new path integration approaches, and outlines scaling procedures to model potential-driven fluid flow in heterogeneous media. To properly model the transition from fracture-dominated flow under saturated conditions to matrix-dominated flow under partially saturated conditions, characteristic curves and permeability functions for fractures and matrix need to be improved and validated. Couplings from two-phase flow, heat transfer, solute transport, and rock deformation to liquid flow are also important. For stochastic modeling of alternating units of welded and nonwelded tuff or formations bounded by fault zones, correlations and constraints on average values of saturated permeability and air entry scaling factor between different units need to be imposed to avoid unlikely combinations of parameters and predictions. Large-scale simulations require efficient and verifiable numerical algorithms. New path integration approaches based on postulates of minimum work and mass conservation to solve flow geometry and potential distribution simultaneously are introduced. This verifiable integral approach, together with fractal scaling procedures to generate statistical realizations with parameter distribution, correlation, and scaling taken into account, can be used to quantify uncertainties and generate the cumulative distribution function for groundwater travel times. |
| 出版年 | 1993 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 05 NUCLEAR FUELS ; 54 ENVIRONMENTAL SCIENCES ; HIGH-LEVEL RADIOACTIVE WASTES ; UNDERGROUND DISPOSAL ; TUFF ; FLUID FLOW ; GROUND WATER ; RADIOACTIVE WASTE FACILITIES ; PERFORMANCE ; YUCCA MOUNTAIN ; SOILS ; ROCKS ; EQUATIONS ; MATHEMATICAL MODELS ; CORRELATIONS ; TWO-PHASE FLOW ; HYDROLOGY ; SATURATION ; PERMEABILITY ; RADIONUCLIDE MIGRATION ; Yucca Mountain Project |
| URL | http://www.osti.gov/scitech/servlets/purl/139248 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/265159 |
| 推荐引用方式 GB/T 7714 | Wang, J.S.Y.,Narasimhan, T.N. [Lawrence Berkeley Lab., CA . Processes, mechanisms, parameters, and modeling approaches for partially saturated flow in soil and rock media; Yucca Mountain Site Characterization Project,1993. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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