CFD Study on Aerodynamic Power Output Changes with Inter-Turbine Spacing Variation for a 6 MW Offshore Wind Farm

Nak Joon Choi, Sang Hyun Nam, Jong Hyun Jeong and Kyung Chun Kim
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Nak Joon Choi: School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-Gu, Busan 609-735, Korea
Sang Hyun Nam: DNDE Inc., Busan 612-020, Korea
Jong Hyun Jeong: DNDE Inc., Busan 612-020, Korea
Kyung Chun Kim: School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-Gu, Busan 609-735, Korea

Energies, 2014, vol. 7, issue 11, 1-16

Abstract: This study examined the aerodynamic power output change of wind turbines with inter-turbine spacing variation for a 6 MW wind farm composed of three sets of 2 MW wind turbines using computational fluid dynamics (CFD). The wind farm layout design is becoming increasingly important as the use of wind energy is steadily increasing. Among the many wind farm layout design parameters, the inter-turbine spacing is a key factor in the initial investment cost, annual energy production and maintenance cost. The inter-turbine spacing should be determined to maximize the annual energy production and minimize the wake effect, turbulence effect and fatigue load during the service lifetime of wind turbines. Therefore, some compromise between the aerodynamic power output of wind turbines and the inter-turbine spacing is needed. An actuator disc model with the addition of a momentum source was not used, and instead, a full 3-dimensional model with a tower and nacelle was used for CFD analysis because of its great technical significance. The CFD analysis results, such as the aerodynamic power output, axial direction wind speed change, pressure drop across the rotor of wind turbine, and wind speed deficit due to the wake effect with inter-turbine spacing variation, were studied. The results of this study can be applied effectively to wind farm layout design and evaluation.

Keywords: aerodynamic power output; CFD (computational fluid dynamics); inter-turbine spacing; layout; offshore wind farm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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