초록

CFD(Computational Fluid Dynamics) analysis was carried out to analysis the air flow characteristics of vertical axis wind turbine system with accelerating device. Geometric arc angle of the accelerating device affects the air flow characteristics in the turbine with the effect of Coanda generated from the curved surface. Air velocity distributions with the device angle variation are compared. Flow velocity increases with the device length, and the accelerating device plays a key role in decreasing the air velocity in the wake flow region. Maximum air velocity variation becomes reduced with the accelerating device, and it is largely affected by the arc angle. These results are expected to be utilized in various ways to determine the shape of accelerating device for wind power generation system.

키워드

Vertical Axis Wind Turbine(수직축 풍력발전기), Accelerating device(가속장치), Coanda effect(코안다 효과), Computational Fluid Dynamics(전산유동해석)

참고문헌(14)open

  1. [학술지] M. U. Lee / 2013 / Design optimization of a hydraulic deep-sea manganese pink-up device using Coanda effect / Korean Society of Marine Engineering : 1660 ~ 1665

  2. [학술지] 조우석 / 2013 / 200 W급 자이로밀형 수직축 풍력터빈 로터 블레이드 형상설계 및 유동해석 / 한국마린엔지니어링학회지 37 (2) : 170 ~ 177

  3. [학술지] 조철희 / 2012 / 항력식 조류발전 터빈의 최적 형상 설계 및 유동 수치해석을 통한 성능 평가 / 신재생에너지 8 (2) : 6 ~ 13

  4. [학술지] 홍철현 / 2011 / 사보니우스 풍력 터빈의 효율 향상을 위한 연구 / 한국마린엔지니어링학회지 35 (2) : 258 ~ 263

  5. [학술지] 이주희 / 2011 / 높은 솔리디티를 갖는 자이로밀의 공기역학적 특성 / 대한기계학회논문집 B 35 (12) : 1273 ~ 1283

  6. [학술지] 김종호 / 2013 / 유동해석을 통한 수직축 풍력발전 터빈의 성능 예측 / 대한기계학회논문집 B 37 (4) : 423 ~ 429

  7. [학술지] J. Y. Park / 2000 / An Experimental Study on the Aerodynamic Performance of High-efficient, Amall-scale, Vertical-axis Wind Turbine / Korean Society of Mechanical Engineering 33 (8) : 580 ~ 588

  8. [학위논문] M. Wahl / 2007 / Designing an H-rotor type Wind Turbine for Operation on Amundsen-Scott South Pole Station

  9. [학술지] B. D. Altan / 2008 / An experimental and numerical study on the improvenment of the performance of Savonius wind rotor / Energy Conversion and Management 49 : 3425 ~ 3432

  10. [학술지] J. H. Kim / 2003 / A Study on Flow Analysis and an Estimate of Performance for HAWT dy CFD / Korean Society of Mechanical Engineering 27 (72) : 906 ~ 913

  11. [학술지] Y. Hara / 2014 / Predicting Double-Blade Vertical Axis Wind Turbine Performance by a Quadruple-Multiple Streamtube Model / International Journal of Fluid Machinery and Systems 7 (1) : 1882 ~ 9554

  12. [학술대회] B. E Launder / 1981 / The turbulent wall jet / Proceedings of Aerospace Sci. 19 : 81 ~ 128

  13. [학술지] R. H / 2009 / Wind tunnel and numerical study of a small vertical axis wind turbine / Renewable Energy 35 : 412 ~ 422

  14. [기타] ANSYS Co. / ANSYS Fluent User's Guide 14.5