Effects of Turbulence Intensities on Wake Models of Horizontal Wind Turbines

이 승호; Lee Seung-Ho; 정 회갑; Jeong Houi-Gab; 권 순덕; Kwon Soon-Duck

doi:10.7734/COSEIK.2014.27.4.273

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2014 Vol.27, Issue 4 Preview Page Next Page

Effects of Turbulence Intensities on Wake Models of Horizontal Wind Turbines

2014. pp. 87-94

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Abstract

본 논문에서는 난류 강도가 풍력발전기 후류에 미치는 영향을 살펴보기 위하여 축소된 풍력발전기 모델을 이용하여 풍동실험을 수행하였다. 실험 결과 측정 위치에 따라 풍력발전기가 가지는 특성에 따라 후류의 형태가 달라지며, 난류 강도에 따른 영향이 반드시 고려되어야 하는 것으로 나타났다. 난류 강도만을 일부 고려한 격자 난류 조건에서 등류 조건보다 기존의 후류 모델과 보다 더 잘 일치하는 경향을 보이고 있으며, 측정된 난류 강도 값을 바탕으로 수정된 후류 모델을 제안하였다. 향후 다양한 난류 특성이 고려된 합리적인 모델이 필요하다고 판단된다.

키워드

wind turbine,wake model, turbulence intensity, wind tunnel test

풍력발전기, 후류 모델, 난류 강도, 풍동실험

In this paper, wind tunnel tests of a scaled wind turbine have been performed to investigate the effects of turbulent intensity of oncoming flow on turbine wake field. The scaled turbine model was carefully designed to satisfy the similarity conditions. The wind velocities and turbulent intensities were measured using hotwire anemometer in order to compare with existing wake model. It was found from the tests that the existing wake models well fit with test results at turbulent flow rather than at uniform flow. Finally modified wake model has been proposed based on the measured data.

키워드

wind turbine,wake model, turbulence intensity, wind tunnel test

풍력발전기, 후류 모델, 난류 강도, 풍동실험

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 27
No :4
Pages :87-94
Received Date : 2014-07-11
Revised Date : 2014-07-21
Accepted Date : 2014-07-23
DOI :https://doi.org/10.7734/COSEIK.2014.27.4.273

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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