Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Geometry of three airfoils that use in the MEXICO wind turbine blade

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Normalized local chord and pitch angel in the blade

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Sample mesh discretization for (a) RISOA1-21, (b) NACA 64-418, and (c) DU 91-W2-250 airfoils

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Arrangement of how to analysis a blade element

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Schematic representation of the turbine (inlet and outlet states)

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Airfoil performance with variable angel of attack: (a) NACA 64-418, (b) RISOA1-21, and (c) DU 91-W2-250

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Exergy destruction for wind turbine based on experimental data at various wind velocities

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Power production of the wind turbine based on all scenarios at various wind speeds

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Comparison of wind turbine performance based on experimental data and the BEM code at various wind velocities: (a) energy efficiency and (b) exergy efficiency

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Effect of roughness on wind turbine performance at various wind velocities: (a) energy efficiency and (b) exergy efficiency

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: The ratio of power coefficient (CP) to exergy efficiency computed from computational models and experimental data at various wind speeds

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Variation of power coefficient (CP) for all computational models versus power coefficient of the measurements (CPex), compared to the experimental reference (the black line)

Date of download: 12/26/2017 Copyright © ASME. All rights reserved. From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities J. Energy Resour. Technol. 2016;139(2):022005-022005-8. doi:10.1115/1.4034640 Figure Legend: Variation of power coefficient (CP) for the corrected computational models employing roughness versus power coefficient of the measurements (CPex), compared to the experimental reference (the black line)