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  • Acoustic Characterization of a Hydrokinetic Turbine

    Creator:
    Polagye, Brian
    Abstract:
    Abstract— This study describes the sound produced by a hydrokinetic turbine operating in a riverine environment near Iguigig, AK (USA). Drifting spar buoys equipped with hydrophones and GPS loggers were used to characterize temporal and spatial variability in turbine sound over a range of turbine operating conditions. Because of the...
    Resource Type:
    Technical Report
    Full Text:
    Murphy2 Mechanical Engineering Department, University of Washington UW Mailbox 35260, Seattle, WA 98195

  • Trees, snow and flooding: an investigation of forest canopy effects on snow accumulation and melt at the plot and watershed scales in the Pacific Northwest

    Creator:
    Storck, Pascal
    Abstract:
    Concerns about the extent to which major Pacific Northwest floods over the last decade might have been exacerbated by logging have heightened the need for a better scientific understanding of the role of forest maturity on snow accumulation and melt. To address this need, a multi-scale field and modeling study...
    Resource Type:
    Technical Report

  • Anchor-last deployment procedure for mooring

    Creator:
    Thresher, Robert W. and Nath, John H.
    Abstract:
    The anchor-last mooring procedure is investigated in order to determine the transient forces in the mooring line and the velocities of the anchor. Transient forces were determined and the results showed that no severe snap loads occurred for the cases investigated. In addition, it was found that the vertical velocity...
    Resource Type:
    Technical Report
    Full Text:
    Department of Mechanical Engineering Oregon State University. Corvallis, Oregon 97331 ANCHOR-LAST

  • Assessment of the permanent magnet adjustable-speed coupling system (ASCS)

    Creator:
    Wallace, Alan and von Jouanne, Annette
    Abstract:
    The purpose of this report is to provide information on the adjustable-speed coupling system (ASCS) including: physical construction, principles of operation, application potential, and laboratory and field test results. In addition, comparison laboratory tests will be presented for conventional adjustable speed drives (ASDs). The ASCS has been tested at three...
    Resource Type:
    Technical Report
    Full Text:
    Electrical and Computer Engineering Department at Oregon State University (OSU). A schematic of the

  • Computer simulation of eutrophication

    Creator:
    Bella, David A.
    Abstract:
    The proposal for the research project reported herein was princi­pally prepared during 1968 and the starting date for this study was established as September 1, 1969. In the approximately four years from the preparation of this proposal to the completion of this final report, the state of the art for...
    Resource Type:
    Technical Report
    Full Text:
    . Bella Department of Civil Engineering Oregon State University Corvallis, Oregon 97331 PROJECT

  • Water quality modeling of the Tualatin River

    Creator:
    Berger, Christopher J. (Christopher John)
    Abstract:
    Water quality problems related to excessive algal growth, high nutrient loading, and low flows have been occurring along Oregon's Tualatin River. The Tualatin River is 86 miles long and has a drainage basin of 711 square miles. The drainage basin incorporates forest, agricultural, and urban areas. Located in the Portland...
    Resource Type:
    Technical Report

  • Calibration and verification of HSPF model for Tualatin River Basin Water Quality

    Creator:
    Tang, Fei
    Abstract:
    The Tualatin River Basin is located in the Washington County, Oregon. The river was detected having high chlorophyll a concentration and low dissolved oxygen concentration during summer time, which violated DEQ water quality standards. A mathematical model (HSPF) was used to simulate physical, chemical and biological processes in the basin...
    Resource Type:
    Technical Report
    Full Text:
    ENGINEERING Portland State University 1993 ii TO THE DEPARTMENT OF CIVIL ENGINEERING The faculty advisor