Acquisition of an Unsaturated Flow Apparatus (UFA) with Technical Support to Investigate Hydrologic Processes in the Vadose Zone

购买不饱和流量装置 (UFA) 并提供技术支持以研究包气区的水文过程

• 批准号: 0343514
• 负责人: Edmund Perfect
• 金额: $ 16.03万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-02-15 至 2007-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0343514&HistoricalAwards=false
• 关键词: Acquisition; Unsaturated; Flow; Apparatus; UFA

0343514PerfectThis grant supports the acquisition of an unsaturated flow apparatus (UFA) and two years of half-time technical support for a UFA operator in the Department of Earth and Planetary Sciences at the University of Tennessee. The UFA consists of an ultracentrifuge and pump that uses acceleration to drive water through porous media. The UFA will be used to measure unsaturated hydraulic conductivity, a difficult parameter to measure in porous media but important for intelligently applying hydrologic models of vadose zone processes. The UFA will be also used to measure colloidal, pathogen, and solute transport though variably saturated porous media. The operational range of rotation speeds and flow rates of the UFA allows for simulation of hydraulic conductivities between 10-4 and 10-11 cm/s. This will be the first such device available at a U.S. academic institution.***

这项拨款支持购置一台不饱和流动装置（UFA），并为田纳西大学地球与行星科学系的一名UFA操作员提供两年的半时间技术支持。UFA由一个超离心机和泵组成，利用加速度将水通过多孔介质。UFA将用于测量非饱和水力电导率，这是一个在多孔介质中难以测量的参数，但对于智能应用渗透带过程的水文模型非常重要。UFA还将用于测量胶体、病原体和溶质通过不同饱和多孔介质的运输。UFA的转速和流量的工作范围允许在10-4和10-11 cm/s之间模拟水力导率。这将是美国学术机构首次使用这种设备