대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제60권5호
  • /
  • Pages.351-357
  • /
  • 2023
  • /
  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
권호 표지
DOI QR코드

DOI QR Code

로터 세일의 표면 형상과 조도 변화에 따른 마그누스 효과에 관한 실험연구

Experimental Study on the Effects of Surface Shape and Roughness on the Magnus Effect of Rotor Sails

  • 김영진 (충남대학교 자율운항시스템공학과) ;
  • 황재연 (충남대학교 자율운항시스템공학과) ;
  • 안병권 (충남대학교 자율운항시스템공학과)
  • Young-Jin Kim (Department of Autonomous Vehicle System Engineering, Chungnam National University) ;
  • Jae-Yeun Hwang (Department of Autonomous Vehicle System Engineering, Chungnam National University) ;
  • Byoung-Kwon Ahn (Department of Autonomous Vehicle System Engineering, Chungnam National University)
  • 투고 : 2023.07.10
  • 심사 : 2023.08.21
  • 발행 : 2023.10.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, we devised methods to enhance the efficiency of rotor sails which have been applied as one of the energy saving devices of ships. The idea of the study originated from the notion that installing protrusions or increasing the surface roughness on the smooth surface of the rotor sail could delay the separation of the incoming wind flow and consequently increase the lift force. Five cylinder models were considered and tested in an open-type wind tunnel at Chungnam National University. A smooth surface cylinder exhibits the highest lift-to-drag ratio at a specific Reynolds number, and as the Reynolds number increases this value decreases sharply. The variation in this typical Magnus force can be significantly improved by altering the surface shape and roughness of the rotor sail. It has been observed that increasing the surface roughness improves the lift characteristics, resulting in increased efficiency. Furthermore, it revealed that the reverse Magnus effect which may occur during actual operation in the low spin ratio region can be significantly enhanced.

키워드

과제정보

이 논문은 2023년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원(P0017006, 2023년 산업혁신인재성장지원사업)과 KTTC 실험유체역학 컨테스트의 지원을 받아 수행된 연구임.

참고문헌

  1. Anemoi Marine, 2022. Anemoi-Marine-Technologies-Brochure, URL: http://www.anemoimarine.com
  2. Badalamenti, C. and Prince S.A., 2008. Effects of endplates on a rotating cylinder in crossflow, 26th AIAA Applied Aerodynamics Conference, Honolulu, Hawaii, USA, 18-21 August 2008.
  3. Bordogna, G., Muggiasca, S., Ginappino, S., Belloli, M., Keuning, J.A., Huijsmans, R.H.M. and van't Veer, A.P., 2019. Experiments on a flettner rotor at critical and supercritical reynolds numbers. Journal of Wind Engineering and Industrial Aerodynamics, 188, pp.19-29. https://doi.org/10.1016/j.jweia.2019.02.006
  4. Bordogna, G., Muggiasca, S., Ginappino, S., Belloli, M., Keuning, J.A. and Huijsmans, R.H.M., 2020. The effects of the aerodynamic interaction on the performance of two flettner rotors. Journal of Wind Engineering and Industrial Aerodynamics, 196, 104024.
  5. Buford, W.E., 1954. Magnus effect In the case of rotating cylinders and shell. MEMORANDUM Report No. 821.
  6. Enercon Wind Company, 2013. Enercon E-ship 1 wind hybrid commercial cargo ship. 4th Conference on Ship Efficiency, Hamburg, Germany, 23-24 September 2013.
  7. Kim, J.E., Cho, D.H. and Lee, C.Y., 2022. Numerical analysis study on the turbulent flow characteristics around the rotor sail for vessels. Journal of the Korean Society of Marine Environment & Safety, 28(4), pp.648-656. https://doi.org/10.7837/kosomes.2022.28.4.648
  8. Kwon, C.S., Yeon, S.M., Kim, Y.C., Kim, Y.G., Kim, Y.H and Kang, H.J., 2022. A parametric study for a flettner rotor in standalone condition using CFD. International Journal of Naval Architecture and Ocean Engineering, 14, pp.1-11. https://doi.org/10.1016/j.ijnaoe.2022.100493
  9. Muto, M., Watanabe, H., Tsubokura, M. and Oshima, N., 2011. Negative magnus effect on a rotating sphere at around the critical Reynolds number. Journal of Physics: Conference Series, 318, 032021.
  10. Park, H.S., Ha, S.Y. and Park, S.W., 2019. International Maritime Organization(IMO), 40% greenhouse gas by 2030 Reduction target, new propulsion fuel(fossil fuel-OUT) means development and use. KMI trend analysis Report Vol. 137.
  11. Peter, N. and John, K., 2016. The magnus effect and flettner rotor: potential application for future oceanic shipping, Journal of Pacific Studies, 36(2), pp.161-182. https://doi.org/10.33318/jpacs.2016.36(2)-9