skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Experimental and numerical analysis of the performance and wake of a scale–model horizontal axis marine hydrokinetic turbine

Authors:
 [1];  [1];  [1]
  1. Teymour Javaherchi Mechanical Engineering, University of Washington, Stevens Way, Box 352600 - Seattle, Washington 98195, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1375655
Grant/Contract Number:
EE0003283; FG36-08GO18179
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Renewable and Sustainable Energy
Additional Journal Information:
Journal Volume: 9; Journal Issue: 4; Related Information: CHORUS Timestamp: 2018-02-14 21:09:27; Journal ID: ISSN 1941-7012
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Javaherchi, Teymour, Stelzenmuller, Nick, and Aliseda, Alberto. Experimental and numerical analysis of the performance and wake of a scale–model horizontal axis marine hydrokinetic turbine. United States: N. p., 2017. Web. doi:10.1063/1.4999600.
Javaherchi, Teymour, Stelzenmuller, Nick, & Aliseda, Alberto. Experimental and numerical analysis of the performance and wake of a scale–model horizontal axis marine hydrokinetic turbine. United States. doi:10.1063/1.4999600.
Javaherchi, Teymour, Stelzenmuller, Nick, and Aliseda, Alberto. 2017. "Experimental and numerical analysis of the performance and wake of a scale–model horizontal axis marine hydrokinetic turbine". United States. doi:10.1063/1.4999600.
@article{osti_1375655,
title = {Experimental and numerical analysis of the performance and wake of a scale–model horizontal axis marine hydrokinetic turbine},
author = {Javaherchi, Teymour and Stelzenmuller, Nick and Aliseda, Alberto},
abstractNote = {},
doi = {10.1063/1.4999600},
journal = {Journal of Renewable and Sustainable Energy},
number = 4,
volume = 9,
place = {United States},
year = 2017,
month = 7
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 21, 2018
Publisher's Accepted Manuscript

Save / Share:
  • The use of acoustic Doppler current profilers (ADCPs) for the characterization of flow conditions in the vicinity of both experimental and full scale marine hydrokinetic (MHK) turbines is becoming increasingly prevalent. The computation of a three dimensional velocity measurement from divergent acoustic beams requires the assumption that the flow conditions are homogeneous between all beams at a particular axial distance from the instrument. In the near wake of MHK devices, the mean fluid motion is observed to be highly spatially dependent as a result of torque generation and energy extraction. This paper examines the performance of ADCP measurements in suchmore » scenarios through the modelling of a virtual ADCP (VADCP) instrument in the velocity field in the wake of an MHK turbine resolved using unsteady computational fluid dynamics (CFD). This is achieved by sampling the CFD velocity field at equivalent locations to the sample bins of an ADCP and performing the coordinate transformation from beam coordinates to instrument coordinates and finally to global coordinates. The error in the mean velocity calculated by the VADCP relative to the reference velocity along the instrument axis is calculated for a range of instrument locations and orientations. The stream-wise velocity deficit and tangential swirl velocity caused by the rotor rotation lead to significant misrepresentation of the true flow velocity profiles by the VADCP, with the most significant errors in the transverse (cross-flow) velocity direction.« less
  • This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. It summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the newmore » added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30 degrees of yaw.« less
  • This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. This paper summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and themore » new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30{sup o} of yaw.« less