Unstable Flow in Layered Soils: Effect on Groundwater Pollution

层状土壤中的不稳定流：对地下水污染的影响

• 批准号: 8604133
• 负责人: Daniel Hillel
• 金额: $ 27.43万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-06-15 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8604133&HistoricalAwards=false
• 关键词: Unstable; Flow; Layered; Soils; Effect

The phenomenon of hydrodynamic instability, which gives rise to transient "fingers" through the vadose zone will be studied. A systematic set of experiments will be performed to define the factors and circumstances causing fingering, the consequent flow patterns (spatial and temporal) for water and solutes. Laboratory experiments will be followed by field trials. The ultimate aim will be to use the data in developing a physically based mathematical model describing recharge processes which can be tested in the field. The model will also serve as a predictive tool in guiding the location and lining of waste-disposal facilities.

将研究通过渗流区产生瞬时“手指”的流体动力学不稳定现象。 将进行一组系统的实验来确定导致指进的因素和环境，以及水和溶质的后续流动模式（空间和时间）。 实验室实验之后将进行现场试验。 最终目标是利用这些数据开发一个基于物理的数学模型，描述补给过程，并可以在现场进行测试。 该模型还将作为预测工具来指导废​​物处理设施的位置和衬砌。