Effect of Fiber Orientation of Bend-Twist Coupled Blades on the Structural Performance of the Wind Turbine System

Date

2017-01-05

Author

Şener, Özgün
Kayran, Altan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

229
views

0
downloads

The effect of fibre angle of bend-twist coupled mixed GFRP-CFRP wind turbine blades on the structural performance of the wind turbine system is studied. For the structural performance evaluation, the effect of the use of off-axis plies in the main spar caps of the bendtwist coupled wind turbine blade on the reduction of damage correspondent internal loads in the whole wind turbine system, electrical power produced, tower-blade end gap, and maximum stress in the blades are taken as major criteria. Different off-axis ply angles are used to create the bend-twist coupled blades. Two different multi-body dynamic codes, which use superelement and non-linear beam definitions respectively, are used to create the 5 MW multibody wind turbine models with different mixed GFRP-CFRP bend-twist coupled wind turbine blades. Ten-minute transient aeroelastic analyses of the wind turbine systems are performed for 6 normal turbulence wind definitions and structural performance of the wind turbine systems are evaluated based on the average damage correspondent internal load, electrical power produced, minimum tower-blade end gaps and stresses in the critical blade sections. It is shown that for the slightly over-rated average hub-height wind speed, bend-twist coupled blades provide substantial reduction in the load levels in the wind turbine with no major performance drawback.

URI

https://hdl.handle.net/11511/43489

DOI

https://doi.org/10.2514/6.2017-1167

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Effect of steady and transient wind shear on the wake structure and performance of a horizontal axis wind turbine rotor Sezer Uzol, Nilay; Uzol, Oğuz (2009-12-01) This paper presents an investigation of the effect of steady and transient freestream wind shear on the wake structure and performance characteristics of a horizontal axis wind turbine rotor. A new 3-D unsteady vortex-panel method potential flow solver based on a free-vortex-wake methodology, AeroSIM, is used for this purpose. The code is validated using the experimental data from the NREL UAE experiments, as well as checked against the theoretical models developed by previous researchers. Three-different i...
Effect of steady and transient wind shear on the wake structure and performance of a horizontal axis wind turbine rotor SEZER UZOL, NİLAY; Uzol, Oğuz (2013-01-01) This paper presents an investigation of the effect of steady and transient free-stream wind shear on the wake structure and performance characteristics of a horizontal axis wind turbine rotor. A new three-dimensional unsteady vortex-panel method potential flow solver based on a free-vortex wake methodology, AeroSIM+, is used for this purpose. The code is validated using the experimental data from the National Renewable Energy Laboratory Unsteady Aerodynamics Experiments. The effects of vortex core model, co...
Determination of the bending twisting coupling potential of composite materials via digital image correlation and its implementation in wind turbine blades Şener, Özgün; Kayran, Altan; Department of Aerospace Engineering (2017) In this thesis study, the main objective is to investigate the effect of bending-twisting coupling in composite wind turbine blades on the load alleviation, power generation and structural performance of the wind turbine system. For this purpose, experimental and numerical study is initially conducted to determine the bend-twist coupling potentials of composite materials. Bending-twisting behavior of composite materials are determined through a comparative study via the Digital Image Correlation (DIC) syste...
Effects of tip injection on the performance and near wake characteristics of a model wind turbine rotor Abdulrahim, Anas; Anik, Ezgi; Ostovan, Yashar; Uzol, Oğuz (2016-04-01) This paper presents an investigation of the effects of tip injection on the performance and near wake characteristics of a model wind turbine rotor. Experiments are conducted by placing a three-bladed horizontal axis wind turbine rotor at the exit of an open-jet wind tunnel. The rotor blades are non linearly twisted and tapered with NREL 5826 airfoil profile. The nacelle, hub and the blades are specifically designed to allow pressurized air to pass through and get injected from the blade tips while the roto...
Structural Performance and Power Production of Wind Turbine Systems with Bend-Twist Coupled Blades in Underrated Wind Conditions Şener, Özgün; Kayran, Altan (2018-01-12) The implementation of bend-twist coupling effect on wind turbine blades on the structural performance and power production of wind turbine system exposed to underrated wind conditions are studied. The structural performance of wind turbine systems are evaluated by the decrease in damage equivalent loads in the whole wind turbine system and reduction in maximum fiber direction stresses in the blades with the exploitation of off-axis plies in the main spar caps of the wind turbine blades. Wind turbine models ...

Citation Formats

Ö. Şener and A. Kayran, “Effect of Fiber Orientation of Bend-Twist Coupled Blades on the Structural Performance of the Wind Turbine System,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43489.