이중 다류관 모델을 적용한 수직축 풍력발전기 공력해석코드 개발 및 검증
Development and Verification of an Aerodynamic Analysis Code Based on Double Multiple Streamtube Modelfor Vertical-axis Wind Turbines
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This research developed an aerodynamic analysis code for a vertical-axis wind turbine (VAWT) based on the structure of AeroDyn ver. 15, developed by the NREL. The aerodynamic analysis code used the double multiple streamtube model (DMSM) to describe aerodynamic characteristics, anticipating more accurate results and faster computation time. Tip-loss correction was adopted to increase the accuracy of the results. Validation was carried out by comparing the results from the developed code to the experimental and CFD analysis results. For the validation of aerodynamic characteristics computed by the developed code, power coefficient curves and rotor torque curves were chosen. The power coefficient curve predicted by the developed code showed good agreement with the experimental and CFD results. In the case of rotor torque, the developed code gave reasonable results compared to the CFD results. The differences in rotor torque were due to the secondary effects of the VAWT aerodynamics. Consequently, it was found that the developed aerodynamic analysis code can be used for the preliminary design of the VAWT, which requires fast and reasonable prediction.
Abstract
This research developed an aerodynamic analysis code for a vertical-axis wind turbine (VAWT) based on the structure of AeroDyn ver. 15, developed by the NREL. The aerodynamic analysis code used the double multiple streamtube model (DMSM) to describe aerodynamic characteristics, anticipating more accurate results and faster computation time. Tip-loss correction was adopted to increase the accuracy of the results. Validation was carried out by comparing the results from the developed code to the experimental and CFD analysis results. For the validation of aerodynamic characteristics computed by the developed code, power coefficient curves and rotor torque curves were chosen. The power coefficient curve predicted by the developed code showed good agreement with the experimental and CFD results. In the case of rotor torque, the developed code gave reasonable results compared to the CFD results. The differences in rotor torque were due to the secondary effects of the VAWT aerodynamics. Consequently, it was found that the developed aerodynamic analysis code can be used for the preliminary design of the VAWT, which requires fast and reasonable prediction.
참고문헌 (14)
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