SGER: The Non-Contact Determination of River Flow Rates

摘要提案编号： CTS-0341911主要供应商：EDWIN A COWEN机构： 美国地质调查局（USGS）负责监测美国7000多条河流的流速。这种监测任务是昂贵的，往往是危险的，因为它需要在风暴事件期间由美国地质勘探局人员直接在现场测量。 美国地质勘探局以及世界各地负责河流流量监测的其他机构对开发远程非接触式流量测量能力非常感兴趣。 这项拨款是用于发展一套以红外线为基础的定量成像系统，以远距离非接触方式测定表面速度场和深度速度场。 后者将通过考虑非平衡条件下河流水流的垂向湍流热结构来实现。 建议的图像分析算法将来自PI的粒子图像测速（PIV）以前的开发工作。 这项工作的最终目标是开发一个强大的工具，用于非接触式监测河流流量。 红外测量技术将具有广泛的用途，超出河流流量监测，包括空气-水气体传输研究的表面更新的直接测量，浅沉积物负载流（如冲流区）中沉积物的近表面运输，以及其他两相流（如掺气流）中的近表面条件（例如，冲浪区）。

ABSTRACTPROPOSAL NO.: CTS-0341911PRINCIPAL INVESTIGATORS: EDWIN A COWENINSTITUTION: CORNELL UNIVERSITY THE NON-CONTACT DETERMINATION OF RIVER FLOW RATESThe United States Geological Survey (USGS) is responsible for monitoring the flow rates for over 7000 rivers across the United States. This monitoring mandate is expensive and often hazardous, as it requires direct in-the-field measurements by USGS personnel during storm events. The USGS, as well as other agencies responsible for river flow monitoring around the world, is extremely interested in the development of remote non-contact flow rate measurement capabilities. This grant is to develop an infrared-based quantitative imaging system for the determination of surface velocity fields and velocity fields at depth via remote non-contact means. The latter will be accomplished by considering the vertical turbulent thermal structure of river flows under non-equilibrium conditions. The proposed image analysis algorithms will be derived from the PI's previous development work with particle image velocimetry (PIV). The ultimate goal of this work is to develop a robust tool for the non-contact monitoring of river flows. The infrared measurement technique will have wide ranging uses beyond river flow monitoring including direct measurements of surface renewal for air-water gas transfer studies, near-surface transport of sediment in shallow sediment laden flows (such as the swash zone), as well as near-surface conditions in other two-phase flows such as aerated flows (e.g., the surf zone).