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

The Society of Naval Architects of Korea (대한조선학회)
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Influence of Jet Nozzle Arrangement on the Performance of a Coanda Foil

제트 노즐의 배치가 콴다 날개의 성능에 미치는 영향

  • Seo, Dae-Won (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Joung-Hyun (Dept. of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Hyo-Chul (Jungseok Research Institute of International Logistics and Trad. Inha University) ;
  • Lee, Seung-Hee (Dept. of Naval Architecture and Ocean Engineering, Inha University)
  • 서대원 (인하대학교 선박공학과) ;
  • 김종현 (인하대학교 선박공학과) ;
  • 김효철 (인하대학교 정석 물류통상연구원) ;
  • 이승희 (인하대학교 선박공학과)
  • Published : 2008.12.31
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Abstract

The Coanda effects demonstrate that a jet stream applied tangential to a curved surface can generate lift force by increasing the circulation. Many experimental and numerical studies have been performed on the Coanda effect and it is found to be useful in various fields of aerodynamics. The Coanda effect may have practical application to marine hydrodynamics since various control surfaces are being used to control behaviors of ships and offshore structures. In the present study, numerical computations are performed to find the applicability of the Coanda effect to the marine control surfaces. For the purpose, changes in flow characteristics around a flapped foil due to the Coanda effect have been simulated by RANS equations discretized with a cell-centered finite volume method (FVM). In the process, special attention has been given to the influence of jet nozzle arrangement on the lift characteristics of the Coanda foil. It is found that the shape as well as the location of the jet intake and jet exit affects the lift performance of the foil significantly.

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References

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