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research-article

CHARACTERIZATION OF A WIND GENERATION SYSTEM FOR USE IN OFFSHORE WIND TURBINE DEVELOPMENT

[+] Author and Article Information
Raul Urbina

5711 Boardman Hall Room 233 Orono, ME 04469
raul.urbina1@maine.edu

James M. Newton

5711 Boardman Hall Room 210 Orono, ME 04468
james.newton1@maine.edu

Matthew P. Cameron

5711 Boardman Hall Room 210 Orono, ME 04468
cameronmp1@gmail.com

Richard W. Kimball

301 Dismukes Hall Castine, ME 04420
richard.kimball@mma.edu

Andrew J. Goupee

35 Flagstaff Road Orono, ME 04469
agoupe91@maine.edu

Krish Thiagarajan

Department of Mechanical Engineering 5711 Boardman Hall, #229 Orono, ME 04469
krish.thiagarajan@maine.edu

1Corresponding author.

ASME doi:10.1115/1.4037826 History: Received February 05, 2016; Revised August 07, 2017

Abstract

Environmental conditions created by winds blowing oblique to the direction of the waves are necessary to conduct some survivability tests of offshore wind turbines. However, some facilities lack the capability to generate quality waves at a wide range of angles. Thus, having a wind generation system that can be rotated makes generating winds that blow oblique to the waves possible during survivability tests. Rotating the wind generation system may disrupt the flow generated by the fans because of the effect of adjacent walls. Closed or semi-closed wind tunnels may eliminate the issue of wall effects, but these types of wind tunnels could be difficult to position within a wave basin. In this work, a prototype wind generation system that can be adapted for offshore wind turbine testing is investigated. The wind generation system presented in this work has a return that minimizes the effect that the walls could potentially have on the fans. This study characterizes the configuration of a wind generation system using measurements of the velocity field detailing mean velocities, flow directionality and turbulence intensities. Measurements were taken downstream to evaluate the expected area of turbine operation and the shear zone. The dataset has aided in the identification of conditions that could potentially prevent the production of the desired flows. Therefore, this work provides a useful dataset that could be used in the design of wind generation systems and in the evaluation of the benefits of recirculating wind generation systems for offshore wind turbine research.

Copyright (c) 2017 by ASME
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