Browsing Marine Energy Technology Symposium by Issue Date
Now showing items 1-20 of 50
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Discrete Element Modeling of Blade–Strike Frequency and Survival of Fish Passing Through Hydrokinetic Turbines
(2014-04)Evaluating the consequences to fish from blade-strike on marine hydrokinetic (MHK) turbine blades is important for incorporating environmental objectives into the integral optimization of machine performance. For instance, ... -
Analysis of the Impacts of Wave Energy Converter Arrays on the Nearshore Wave Climate
(2014-04)This study analyzes the impacts of offshore Wave Energy Converter (WEC) arrays on far-field waves and on nearshore wave-induced hydrodynamic forcing for a variety of array designs and incident wave conditions. The main ... -
Testing and Accelerated Aging of Conductive Antifouling Paints for Marine Applications
(2014-04)Marine hydrokinetic (MHK) device survivability is necessary to understand in order to develop the vast renewable wave and tidal energy resource. Antifouling coatings serve to ensure device longevity by preventing degradation ... -
Array Optimization for Tidal Energy Extraction in a Tidal Channel – A Numerical Modeling Analysis
(2014-04)This paper presents an application of a hydrodynamic model to simulate tidal energy extraction in a tidal dominated estuary in the Pacific Northwest coast. A series of numerical experiments were carried out to simulate ... -
Control of a Helical Cross‐Flow Current Turbine
(2014-04)Adaptive control strategies utilizing preview information of upstream velocity are promising approaches for enhancing performance and reducing loads on hydrokinetic turbines. A control scheme relating a turbine's characteristic ... -
Spatio-Temporal Resolution of Different Flow Measurement Techniques for Marine Renewable Energy Applications
(2014-04)Marine hydrokinetic (MHK) energy conversion devices are subject to a wide range of turbulent scales, either due to upstream bathymetry, obstacles and waves, or from wakes of upstream devices in array configurations. The ... -
Ocean Power Technologies Powerbuoy®: System‐Level Design, Development and Validation Methodology
(2014-04)In this paper the authors will describe a system‐level, multi‐physics based development of PowerBuoy® products at Ocean Power Technologies (OPT). The PowerBuoy is a moored system which extracts useful electrical power from ... -
Stability and Loads Validation of an Ocean Current Turbine
(2014-04)The design of a moored ocean current turbine presents many engineering challenges; among them are accurately predicting the stability and loads of the device. To validate computational loads and stability prediction tools, ... -
Fatigue Life Distribution for a Simple Wave Energy Converter
(2014-04)Fatigue is known to be a dominant failure mode for systems subjected to wave loading. A time domain simulation of loading on a simple Wave Energy Converter (WEC) was used to develop the distribution of fatigue failures ... -
Development of an Adaptable Monitoring Package for Marine Renewable Energy Projects Part I: Conceptual Design and Operation
(2014-04)The Adaptable Monitoring Package (AMP), along with a remotely operated vehicle (ROV) and custom tool skid, is being developed to support near-field (≤10 meters) monitoring of hydrokinetic energy converters. The AMP is ... -
Layouts for Ocean Wave Energy Farms: Models, Properties, and Heuristic
(2014-04)We present models and algorithms for choosing optimal locations of wave energy conversion (WEC) devices within an array, or wave farm. The location problem can have a significant impact on the total power of the farm due ... -
Development and Demonstration of The WEC-Sim Wave Energy Converter Simulation Tool
(2014-04)The National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SNL) have developed WEC-Sim to provide the wave energy converter (WEC) design community with an open-source simulation tool. WEC-Sim models ... -
Tidal Distortion as Pertains to Hydrokinetic Turbine Selection and Resource Assessment
(2014-04)Synthetic M2 and M4 velocity signals with differing relative phase, are quantified by the statistical parameters skewness and asymmetry, to observe the effect of tidal distortion on available and technical energy for ... -
Determining the Spatial Coherence of Turbulence at MHK Sites
(2014-04)Although turbulence is thought to be a key variable in the performance and survivability of Marine Hydrokinetic turbines, it has not been fully characterized at sites where they will be deployed. In particular, the ... -
Externally Bonded FBG Strain Sensors Structural Health Monitoring of Marine Hydrokinetic Structures
(2014-04)To reduce operations and maintenance costs, mitigate failures, and improve capacity factor, structural health‐monitoring systems can provide key information to improve management of marine hydrokinetic devices. While present ... -
A Methodology for Wave-to-Wire WEC Simulations
(2014-04)This paper looks at the methodology of building a full wave-to-wire WEC (Wave Energy Convertor) simulation and presents examples of its use for a variety of different types of WEC. Wave resource information from the West ... -
Experimental Study of Tribological Performance of Bearing-Seal Assembly of Hydrokinetic Devices in Sedimented Water
(2014-04)In this study, wear of polymer and ceramic coated bearings for use in hydrokinetic devices were investigated in sedimented water under the loading conditions similar to those expected in the field using a customized flume. ... -
Development of a Driving Electric Dynamometer Rotor Emulator for MHK In‐Stream Turbines
(2014-04)As marine and hydrokinetic (MHK) technologies which convert the flow of fluid into useful electrical power are developed, it is desirable to simulate drivetrain performance and refine control strategies in a laboratory ... -
Field Measurement Test Plan to Determine Effects of Hydrokinetic Turbine Deployment on Canal Test Site in Yakima, WA, USA
(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 ... -
Simulation of Hydrokinetic Turbines in Turbulent Flow Using Vortex Particle Methods
(2014-04)This work presents the development of computational models that capture vorticity generation and turbulent diffusion within wind and hydrokinetic turbine farms. The use of vortex methods is examined as an alternative for ...
