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Browsing by Author "Dallman, Ann"

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    Field Measurement Test Plan to Determine Effects of Hydrokinetic Turbine Deployment on Canal Test Site in Yakima, WA, USA
    Gunawan, Budi; Neary, Vincent S.; Roberts, Jesse; Dallman, Ann; Grovue, Shane; Mortensen, Josh; Heiner, Bryan (2014-04)
    The primary goal of the Department of Energy’s Water Power Program is to efficiently develop and utilize the country’s marine hydrokinetic (MHK) and conventional hydropower (CH) resources. The program has recently identified the need to better understand the potential for hydrokinetic energy development within existing canal systems that may already have integrated CH plants. Hydrokinetic (HK) turbine operation can alter water surface elevations and modify the flow in a canal. Significant water level alterations and hydrodynamic energy losses are generally undesirable not only for CH plan operations, but also for irrigation and flood management operations. The goal of this study is to better understand the effect of operating individual and arrays of devices on local water operations through field measurements and numerical modeling. A methodology to study the effect of hydrokinetic turbine deployment in a test site in Roza Canal, Yakima, WA, is presented. The methodology comprises detailed water level and velocity measurements to characterize energy gradeline and inflow and wakeflow fields. Results from a preliminary testing are also discussed.
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    Initial Characterization of the Wave Resource at Several High Energy U.S. Sites
    Dallman, Ann; Neary, Vincent S. (2014-04)
    Wave energy resource characterization efforts are critical for developing knowledge of the physical conditions experienced by wave energy converter (WEC) devices and arrays. Developers are lacking a consistent characterization of possible wave energy test sites, and therefore Sandia National Laboratories (SNL) has been tasked with developing a catalogue characterizing three high energy U.S. test sites. The initial results and framework for the catalogue are discussed in this paper.