한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제43권2호
  • /
  • Pages.97-108
  • /
  • 2015
  • /
  • 1225-1348(pISSN)
  • /
  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
권호 표지
DOI QR코드

DOI QR Code

캠버가 있는 3차원 박판 강체 모형의 측풍 공기력에 대한 수치 연구

Numerical Study on the Side-Wind Aerodynamic Forces of Chambered 3-D Thin-Plate Rigid-Body Model

  • Shin, Jong-Hyeon (Dept. of Mechanical Engineering, Graduate School, Kunsan National University) ;
  • Chang, Se-Myong (School of Mechanical and Aerospace Engineering, Kunsan National University) ;
  • Moon, Byung-Young (Dept. of Naval Architecture, Kunsan National University)
  • 투고 : 2014.08.18
  • 심사 : 2014.12.30
  • 발행 : 2015.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

돛 요트, 패러글라이더, 또는 고공 풍력 등의 설계에 있어, 3차원 모델에 가해지는 측풍공기력을 해석하는 일은 다양한 기계의 성능을 예측하기 위해 매우 중요하다. 3차원 형상 주위의 본질적인 유동 물리를 이해하기 위하여, 본 연구에서는 간략화된 강체 모델들이 제안되었다. 자유류 속도, 받음각, 종횡비, 그리고 캠버가 독립변수로서 고려되었다. 양력과 항력 계수들은 ANSYS-CFX를 이용한 전산유체역학 해석을 통하여 계산되었고, 유동장의 후처리된 가시화 결과는 유체역학의 관점에서 해석되었다.

In the design of sailing yachts, para-glider, or high-sky wind power, etc., the analysis of side-wind aerodynamic forces exerted on a cambered 3-D model is very important to predict the performance of various machinery systems. To understand the essential flow physics around the three-dimensional shape, simplified rigid-body models are proposed in this study. Four parameters such as free stream velocity, angle of attack, aspect ratio, and camber are considered as the independent variables. Lift and drag coefficients are computed with CFD technique using ANSYS-CFX, and the results with the visualization of post-processed flow fields are analyzed in the viewpoint of fluid dynamics.

키워드

참고문헌

  1. Yoo, J., " Two-Equation Eddy- Viscosity Turbulence Models for Engineering Application," Journal of the Society of Naval Architects of Korea, Vol.42, No.1, 2005, pp.24-33. https://doi.org/10.3744/SNAK.2005.42.1.024
  2. Yoo, J., and Kim, H.T., " Computational and Experimental Study on Performance of Sails of a Yacht," Ocean Engineering, Vol.33, No.10, 2006, pp.1322-1342. https://doi.org/10.1016/j.oceaneng.2005.08.008
  3. Yoo, J., " Experimental Study on the Hydrodynamic Forces of 30 Feet Sailing Yacht," Journal of the Society of Naval Architects of Korea, Vol.42, No.3, 2005, pp.233-240. https://doi.org/10.3744/SNAK.2005.42.3.233
  4. Lee, P.K., and Kim, H.K., "Numerical Analysis of Blockage Effects on Aerodynamic Forces for Yacht Sails in Wind Tunnel Experiment," Journal of the Society of Naval Architects of Korea, Vol.43, No.4, 2006, pp.431-439. https://doi.org/10.3744/SNAK.2006.43.4.431
  5. Bak, S., "Fluid-Structure Interection Analysis on the Deformation of Simplified Yacht Sails." Journal of the Society of Naval Architects of Korea, Vol.50, No.1, 2013, pp.33-40. https://doi.org/10.3744/SNAK.2013.50.1.33
  6. Dong, K. M., and Jung, S. N., "Aerodynamic Performance Prediction of a Counter-rotating Wind Turbine System with Wake Effect," Journal of the Korean Society for Aeronautical & Space Sciences, Vol.30, No. 7, 2002, pp. 20-28. https://doi.org/10.5139/JKSAS.2002.30.7.020
  7. Gong, C. D., Lee, H. S., and Kim, I. K., "Aerodynamic and Structural Design of A High Efficiency Small Scale Composite Vertical Axis Wind Turbine Blade," Journal of the Korean Society for Aeronautical & Space Sciences, Vol.39, No. 8, 2011, pp. 758-765. https://doi.org/10.5139/JKSAS.2011.39.8.758
  8. Nam, Y. S., and La, Y. H., " Individual Pitch Control of NREL 5MW Wind Turbine in a Transition Region," Journal of the Korean Society for Aeronautical & Space Sciences, Vol.41, No. 3, 2013, pp. 210-216. https://doi.org/10.5139/JKSAS.2013.41.3.210
  9. Podgaets, A.R., and Ockels, W.J., " Three-dimensional Simulation of a Laddermill," Power Congerence WindPowerAsia2006, 2006, pp. 116-121
  10. Lansdorp, B., " Design and Construction of a 4 KW Groundstation for the Laddermill," Published at IASTED EuroPES 2007, Palma de Mallorca, Spain, 2007.
  11. Lansdorp, B., "Long-Term Landdermill Modeling for Site Selection," AIAA, Modeling and Simulation Technologies Conference and Exhibit 2008, 2008.
  12. Park, W.S., and Park, J.H., " Examination and Utility Analysis about Skysails System Application in the Coastal Waters," Journal of Navigation and Port Research, Vol.32, No.10, 2008, pp. 813-819. https://doi.org/10.5394/KINPR.2008.32.10.813
  13. Menter, F.R., "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Application," AIAA Journal, Vol.32, No.8, 1994, pp.1598-1605. https://doi.org/10.2514/3.12149
  14. ANSYS, Inc., ANSYS CFX-Solver Theory Guide R15.0, Canonaburg, United States, 2013, pp.121-125.
  15. White, F.M., Fluid Mechanics, McGraw-Hill, 2007, pp.510

피인용 문헌

  1. CFD ANALYSIS ON THE CHARACTERISTICS FOR FLOCCULATORS OF VERTICAL PADDLE AND HYDRO-FOIL TYPE vol.21, pp.3, 2016, https://doi.org/10.6112/kscfe.2016.21.3.024