READ ME File For 'Dataset for paper "The effects of free-stream turbulence on the performance of a model wind turbine"'

Dataset DOI: 10.5258/SOTON/D1746

ReadMe Author: Stefano Gambuzza, University of Southampton [orcid.org/0000-0001-9070-6901]

This dataset supports the publication:
AUTHORS: Stefano Gambuzza, Bharathram Ganapathisubramani
TITLE: The effects of free-stream turbulence on the performance of a model wind turbine
JOURNAL: Journal of Renewable and Sustainable Energy
PAPER DOI IF KNOWN: - 

This dataset contains all data necessary to reproduce all plots presented in the paper text.

The archive contains the data used to generate all the plots presented in the paper; all datasets are contained in the folder ./data/ and its subfolders.

Each subfolder in ./data/ contains a _content.txt file explaining in detail the files in that subfolder.

The parent folder contains the Matlab scripts necessary to generate the figures, as described below. In addition, this archive also contains the following files:
 * _common.mat: look-and-feel variables (size of the plots, colormaps, axes labels, etc...) common to all plots;
 * fboundary.m: function to identify the boundary between energy containing range and inertial subrange, given a turbulent velocity spectrum
 * fminim2.m: used in fig20_21_CT_selfsimilar.m to fit a curve by stretching on both axes
 * heaviside.m: clone of Matlab's heaviside(x) function, which is included in Matlab Symbolic Math toolbox.

Data here included only contains data to replicate the plots included in the paper: additional data (such as the actual timeseries signals of inflow velocity, torque, angular velocity, drag, etc.) is not included for storage space issues.
This data will, however, be granted upon request to the corresponding author.

The figures are as follows:
Fig. 2: Blade geometry (local chord and twist as a function of spanwise position)
Fig. 3: Load cell response to impulse on vertical
Fig. 4: Polar of used aerofoil and comparison between BEM and experimental CP
Fig. 5: Position of the separation on suction side and local AoA on the blade as a function of tip-speed ratio
Fig. 6: Spectra of selected base flows
Fig. 7: Autocorrelation coefficients of selected base flows
Fig. 8: Self-similar CP curves
Fig. 9: Maximum CP for different base flows
Fig.10: Comparison of selected CP curves
Fig.11: Sample CQ curve
Fig.12: Varialtion of lambda_peak for different base flows
Fig.13: Normalised CQ curves to highlight the shift towards higher tip-speeds
Fig.14: Maxmium CQ for different base flows
Fig.15: Comparison of selected CQ curves
Fig.16: Maximum CP' for different base flows
Fig.17: Comparison of selected CP' curves
Fig.18: Sample CQ'/CQ curve
Fig.19: Fit parameters for CQ'/CQ for different base flows
Fig.20: Self-similar CT curves
Fig.21: Fit parameters for CT curves
Fig.22: Maximum CT for different base flows
Fig.23: Frequency response function of thrust for selected base flows

Data for figures 2 to 5 is in ./data/model-wind-turbine/
Data for figures 6 and 7 is in ./data/base-flows/
Data for figures 8 to 19 is in ./data/power-and-thrust/
Data for figures 20 to 22 is in ./data/thrust/
Data for figure 23 is in ./data/thrust-spectra/

Date of data collection: from August 2019 to July 2020

Information about geographic location of data collection: University of Southampton, 3' × 2' wind tunnel

Licence: ODC-ODbL

Related projects:
No grant has been used to finance this work.

Date that the file was created: 17th of February, 2021