Bladed 및 CFD 코드 활용 U113 2.3 MW 풍력터빈 블레이드 공력특성 분석
Investigation on Aerodynamic Characteristics of U113 2.3 MW Wind Turbine Blade with Bladed and CFD Code
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초록
As global environmental pollution worsens, wind energy has emerged as a crucial alternative to fossil fuels in the renewable energy sector. According to the Energy Outlook report by Bloomberg New Energy Finance, wind power is projected to supply over 25% of global electricity by 2050. In South Korea, research on offshore floating wind power systems is actively pursued to address geographical and spatial constraints. Blade Element Momentum Theory (BEMT) is widely used in the industry for blade design and aerodynamic performance evaluation. Recent design strategies to improve Annual Energy Production (AEP) focus on increasing blade length through tip tapering, which enhances aerodynamic efficiency and reduces aerodynamic loads. In this study, a 2.3 MW wind turbine based on UNISON’s U113 was scaled using similarity laws and analyzed for aerodynamic performance and AEP using Bladed code. To validate the results, three-dimensional CFD simulations were conducted using ANSYS CFX, a commercial CFD solver. Spanwise distribution of aerodynamic loads along the blade was evaluated. Unlike previous studies, this research integrates BEMT-based performance evaluation with 3D CFD validation, thereby enhancing the reliability of the blade design methodology. The results indicate that the aerodynamic performance predicted by Bladed closely aligns with SCADA data, showing an average deviation of only 2.3%.
Abstract
As global environmental pollution worsens, wind energy has emerged as a crucial alternative to fossil fuels in the renewable energy sector. According to the Energy Outlook report by Bloomberg New Energy Finance, wind power is projected to supply over 25% of global electricity by 2050. In South Korea, research on offshore floating wind power systems is actively pursued to address geographical and spatial constraints. Blade Element Momentum Theory (BEMT) is widely used in the industry for blade design and aerodynamic performance evaluation. Recent design strategies to improve Annual Energy Production (AEP) focus on increasing blade length through tip tapering, which enhances aerodynamic efficiency and reduces aerodynamic loads. In this study, a 2.3 MW wind turbine based on UNISON’s U113 was scaled using similarity laws and analyzed for aerodynamic performance and AEP using Bladed code. To validate the results, three-dimensional CFD simulations were conducted using ANSYS CFX, a commercial CFD solver. Spanwise distribution of aerodynamic loads along the blade was evaluated. Unlike previous studies, this research integrates BEMT-based performance evaluation with 3D CFD validation, thereby enhancing the reliability of the blade design methodology. The results indicate that the aerodynamic performance predicted by Bladed closely aligns with SCADA data, showing an average deviation of only 2.3%.