Data from "Performance assessment of vertical axis wind turbines (VAWT) through control volume theory"

Data Documentation for:"Performance assessment of vertical axis wind turbines (VAWT) through control volume theory". Luis Santamaría (*), Katia María Argüelles Díaz, Mónica Galdo Vega, José González Pérez, Sandra Velarde-Suárez, Jesús Manuel Fernández Oro (2022).(*) [e-mail]. Fluid Mechanics Area, Department of Energy, University of Oviedo, C/Wifredo Ricart s/n, Gijon, Asturias, 33204, SpainPublished in Sustainable Energy Technologies and Assessments, 54 (2022), 102811.https://doi.org/10.1016/j.seta.2022.102811 General Information Name of dataset:Data from "Performance assessment of vertical axis wind turbines (VAWT) through control volume theory" Name of data files in data set:'01_central_velocity_pitot_dataset.txt''02_table_pressures.txt''03_mean_norm_vels_H000.txt''04_mean_ang(deg)_H000.txt''05_mean_norm_vels_H075.txt''06_mean_ang(deg)_H075.txt''07_performance.txt''08_sensibility_Ceq.txt''09_sensibility_meas.txt' Dataset language:English Date the data set was last modified:30/12/2021 Funder:The authors wish to thank the financial support of the Spanish Ministry of Economy, Industry and Competitiveness for the R + D Project entitled “Development and Construction of Vertical Axis Wind Turbines for Urban Environments” (DEVTURB) – Ref. ENE2017-89965-P, under the National Plan for Scientific and Technical Research and Innovation. The grant provided by the Principality of Asturias for the support of Research Activities, funded by the Institute for Economic Development (IDEPA) under reference GRUPIN IDI/2018/000205 is also gratefully acknowledged. Additionally, the support given by the University Institute for Industrial Technology of Asturias (IUTA) and the City Hall of Gijón, through the financed project SV-18-GIJON-1-05, is also recognized. How to cite data:Data from [article reference] Methodology for data collection:Experimental flow measurements in the VAWT scale model with pressure transducers and a three-hole pressure probe (cobra type) to obtain the wake velocity components. Data collector(s):Katia María Argüelles DíazLuis Santamaría Bertolín Date of data collection:01/10/2021 - 30/12/2021 Person to contact with questions:Corresponding author or first autor (see affilations and e-mail in the paper). Data entry:10/11/2025 Software (including version #) used to prepare data set:Matlab 2023bExcel 365 Data processing that was performed:All pressure and velocity signals were time-averaged to obtain steady-state values before applying control volume analysis. Velocity and pressure fields were decomposed into mean and fluctuating components to include turbulence effects. The velocity profiles measured with the Cobra probe at the transverse positions were interpolated and numerically integrated to evaluate mass flow, momentum, and energy balances. From these, turbine thrust, aerodynamic torque, and power coefficient were derived. An uncertainty propagation analysis with ±1% and ±5% deviations in measured variables showed that velocity and pressure are the most sensitive parameters, requiring measurement uncertainties below 1% to maintain performance errors within 10%. Results from the CV method were compared with Active Driving Mode data, showing good agreement in the positive torque region (λ ≈ 2–3). Variables:tip-speed ratio [non-dimensional]rotational speed [rpm]transversal direction [m]velocity-magnitude [m/s]angle [deg]pressure [Pa]pressure coefficient [non-dimensional]relative error [%] File Overview:'01_central_velocity_pitot_dataset.txt', measured Pitot pressure as a function of rotational speed. First colum: rotational speed, second column: Pitot pressure.'02_table_pressures.txt', measured pressure as a function of the tip-speed ratio. First column: tip-speed ratio, second to third columns: measured pressures.'03_mean_norm_vels_H000.txt', transversal distributions of velocity magnitude as a function of the tip-speed ratio at the mid plane. Fist column: transversal position, second to ninth column: velocity magnitude.'04_mean_ang(deg)_H000.txt', transversal distributions of flow angle as a function of the tip-speed ratio at the mid plane. Fist column: transversal position, second to ninth column: flow angle.'05_mean_norm_vels_H075.txt', transversal distributions of velocity magnitude as a function of the tip-speed ratio at the axial gap near wake area. Fist column: transversal position, second to ninth column: velocity magnitude.'06_mean_ang(deg)_H075.txt', transversal distributions of flow angle as a function of the tip-speed ratio at the axial gap near wake area. Fist column: transversal position, second to ninth column: flow angle.'07_performance.txt', pressure coefficient as a function of the tip-speed ratio. First column: tip-speed ratio, second to third columns: pressure coefficient (calculated and mesaured).'08_sensibility_Ceq.txt', relative errors as a function of error in the input variables (continuity equation). First column: input deviation, rest of columns: relative errors.'09_sensibility_meas.txt', relative errors as a function of error in the input variables (measured). First column: input deviation, rest of columns: relative errors.