Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/138334 |
| 报告编号 | LBL--29700 |
| 来源ID | OSTI_ID: 138334 |
| Modeling studies of gas movement and moisture migration at Yucca Mountain, Nevada | |
| Tsang, Y.W.; Pruess, K. [Lawrence Berkeley Lab., CA (United States)] | |
| 英文摘要 | Modeling studies on moisture redistribution processes that are mediated by gas phase flow and diffusion have been carried out. The problem addressed is the effect of a lowered humidity of the soil gas at the land surface on moisture removal from Yucca Mountain, the potential site for a high-level nuclear waste repository. At the land surface, humid formation gas contacts much drier atmospheric air. Near this contact, the humidity of the soil gas may be considerably lower than at greater depth, where the authors expect equilibrium with the liquid phase and close to 100% humidity. The lower relative humidity of the soil gas may be modeled by imposing, at the land surface, an additional negative capillary suction corresponding to vapor pressure lowering according to Kelvin`s Equation, thus providing a driving force for the upward movement of moisture in both the vapor and liquid phases. Sensitivity studies show that moisture removal from Yucca Mountain arising from the lowered-relative-humidity boundary condition is controlled by vapor diffusion. There is much experimental evidence in the soil literature that diffusion of vapor is enhanced due to pore-level phase change effects by a few orders of magnitude. Modeling results presented here will account for this enhancement in vapor diffusion. |
| 出版年 | 1991 |
| 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 ; 58 GEOSCIENCES ; SOILS ; DEGASSING ; YUCCA MOUNTAIN ; SITE CHARACTERIZATION ; CAPILLARY FLOW ; DEPTH ; DIFFUSION ; EVAPORATION ; FLOW MODELS ; GAS FLOW ; HIGH-LEVEL RADIOACTIVE WASTES ; HUMIDITY ; HYDROLOGY ; MOISTURE ; ONE-DIMENSIONAL CALCULATIONS ; PROGRESS REPORT ; RADIOACTIVE WASTE STORAGE ; STRATIGRAPHY ; TUFF ; VAPOR PRESSURE ; Yucca Mountain Project |
| URL | http://www.osti.gov/scitech/servlets/purl/138334 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/264456 |
| 推荐引用方式 GB/T 7714 | Tsang, Y.W.,Pruess, K. [Lawrence Berkeley Lab., CA . Modeling studies of gas movement and moisture migration at Yucca Mountain, Nevada,1991. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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