풍력에너지 저널 (Journal of Wind Energy)

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Info. Vol.8 - No.1 (2017.06.30)
DOI kwea.2017.8.1.003
Title 수직축 풍력터빈의 후류 특성에 관한 실험적 연구 (Experimental study on the wake characteristics of vertical axis wind turbine)
Authors 정회갑*, 이승호**, 권순덕***
Institutions * 전북대학교 토목공학과, ** 전북대학교 KOCED 대형풍동실험센터, *** 전북대학교 토목공학과(교신저자)
Abstract A study of far wake characteristic of vertical wind turbines is necessary in order to sit them on a wind farm array. Most research has been conducted on flow measurements of near-wake in a vertical wind turbine, but very limited studies are found in far wake model. This study presents quantitative results of wind tunnel tests for far wake field of a Darrieus vertical axis wind turbine. Hot-wire anemometry was used to measure the distribution of mean velocity deficits and turbulence intensities, positioning it behind in distances between 2 and 12 times the diameter of the rotor. In comparison with horizontal axis wind turbine, velocity deficit and wake width of vertical axis wind turbines showed similar trend, and they set apart in two notable characteristics: drift of the lower peak velocity location and acceleration of wind velocity near the rotor.
Keyword Vertical axis wind turbine(수직축 풍력터빈), Wind tunnel test(풍동실험), Wake model(후류모델), Wind farm(풍력단지), 풍속감소율(Wind velocity deficit ratio)
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