Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Study on Aerodynamic Lift on Windshield Wiper of High-Speed Passenger Vehicles

자동차 고속 주행시 와이퍼 부상현상에 대한 수치해석 연구

  • 이승호 (서강대학교 기계공학과) ;
  • 이성원 (서강대학교 기계공학과) ;
  • 허남건 (서강대학교 기계공학과) ;
  • 최우녕 (현대자동차 차량개발지원팀) ;
  • 설진환 (현대자동차 차량개발지원팀)
  • Received : 2010.03.17
  • Accepted : 2011.01.25
  • Published : 2011.04.01
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Abstract

In the present study, a three-dimensional CFD simulation on aerodynamic lift acting on windshield wiper blades was performed to improve the wiping performance of a vehicle moving at a high speed. To predict the reliable flow characteristics around the windshield wiper system, the computational domain included the full vehicle model with detailed geometry of wiper blades in the wind tunnel. From the numerical results, the drag and lift coefficients of wiper blade were obtained for the performance of windshield wiper. With this aerodynamic characteristics of windshield wiper, the effects of wiping angles and hood tip angle on the wiping performance of the windshield wiper were evaluated.

고속으로 주행하는 자동차에서 전면유리 와이퍼의 부상 현상은 와이퍼의 닦임 성능을 저해하여 운전자의 안전을 위협한다. 본 연구에서는 고속 주행 시 와이퍼가 작동하는 차량 주변의 3차원 CFD 해석을 수행하여 와이퍼의 닦임 성능 향상을 위한 방안을 모색하였다. 정확한 해석결과를 얻기 위하여 차량과 와이퍼의 자세한 형상을 모델링하였고, 해석 결과로 와이퍼의 양력계수와 항력계수를 산출하였다. 또한, 수치해석을 통하여 와이퍼 작동 각도와 후드 끝단 각도가 전면유리 와이퍼의 양력계수와 항력계수에 미치는 영향에 대하여 분석하였다.

Keywords

References

  1. Jallet, S., Devos, S., Maubray, D., Sortais, J. -L., Marmonier, F. and Dreher, T., 2001, "Numerical Simulation of Wiper System Aerodynamic Behavior," Proceedings of SAE 2001 World Congress, Detroit, Michigan, 2001-01-0036.
  2. Lin, C.-F., Hung, M.-F., Tseng, C.Y., Tsai, C.-H., Tai, C.-H. and Lan, C.-C., 2005, "(In Chinese) Numerical Investigation of Aerodynamic Effects on Windshield Wipers," Journal of Technology, Vol. 20, No. 4, pp. 325-332.
  3. Tsubokura, M., Kobayashi, T., Nakashima, T., Nouzawa, T., Nakamura, T., Zhang, H., Onishi, K. and Oshima, N., 2009, "Computational Visualization of Unsteady Flow Around Vehicles Using High Performance Computing," Computer & Fluids, Vol. 38, No. 5, pp. 981-990. https://doi.org/10.1016/j.compfluid.2008.01.020
  4. Cho, H.-K., 2009, "(In Korean) Numerical Analysis on the Aerodynamic Performance of Windshield Wiper," Proceedings of the KSME 2009 spring annual meeting, pp. 38-41.
  5. 2008, STAR-CD Methodology, version 4.08, CD-adapco group.
  6. Lee, B., 2005, "(In Korean) Measuring Angular Speed and Angular Acceleration for Automotive Windshield Wiper Pivot," Transactions of KSAE, Vol. 13, No. 4, pp. 58-65.

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  1. Clamping performance of fastener in windshield wiper assembly using theoretical and experimental methods vol.17, pp.1, 2016, https://doi.org/10.1007/s12239-016-0009-x