A simple technique to estimate the far-field hydraulic impacts associated with the deployment of hydrokinetic devices is introduced. The technique involves representing hydrokinetic devices with an enhanced Manning (bottom) roughness coefficient. The enhanced Manning roughness is found to be a function of the Manning roughness, slope, and water depth of the natural channel as well as device efficiency, blockage ratio, and density of device deployment. The technique is developed assuming simple open channel flow geometry. However, once the effective bottom roughness is determined, it can be used to determine the hydraulic impact of arbitrary device configurations and arbitrary flow situations.
Hydraulic Impacts of Hydrokinetic Devices
Title: Hydraulic Impacts of Hydrokinetic Devices
June 01, 2014
Journal: Renewable Energy
Kartezhnikova, M.; Ravens, T. (2014). Hydraulic Impacts of Hydrokinetic Devices. Renewable Energy, 66, 425-432.