Wind and Structures

  • 제16권2호
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  • Pages.193-211
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  • 2013
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Laboratory measurements of the drag coefficient over a fixed shoaling hurricane wave train

  • Zachry, Brian C. (Wind Science and Engineering Research Center, Texas Tech University) ;
  • Letchford, Chris W. (Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute) ;
  • Zuo, Delong (Wind Science and Engineering Research Center, Texas Tech University) ;
  • Kennedy, Andrew B. (Department of Civil Engineering and Geological Sciences, University of Notre Dame)
  • 투고 : 2011.06.08
  • 심사 : 2012.01.30
  • 발행 : 2013.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents results from a wind tunnel study that examined the drag coefficient and wind flow over an asymmetric wave train immersed in turbulent boundary layer flow. The modeled wavy surface consisted of eight replicas of a statistically-valid hurricane-generated wave, located near the coast in the shoaling wave region. For an aerodynamically rough model surface, the air flow remained attached and a pronounced speed-up region was evident over the wave crest. A wavelength-averaged drag coefficient was determined using the wind profile method, common to both field and laboratory settings. It was found that the drag coefficient was approximately 50% higher than values obtained in deep water hurricane conditions. This study suggests that nearshore wave drag is markedly higher than over deep water waves of similar size, and provides the groundwork for assessing the impact of nearshore wave conditions on storm surge modeling and coastal wind engineering.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation Integrative Graduate Education and Research Traineeship (IGERT)

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피인용 문헌

  1. Observed drag coefficients in high winds in the near offshore of the South China Sea vol.120, pp.13, 2015, https://doi.org/10.1002/2015JD023172
  2. Numerical study of wind profiles over simplified water waves vol.21, pp.3, 2015, https://doi.org/10.12989/was.2015.21.3.289