Wind and Structures

  • 제12권3호
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  • Pages.281-283
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  • 2009
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Determination of Urban Surface Aerodynamic Characteristics Using Marquardt Method

  • Zhang, Ning (School of Atmospheric Sciences, Nanjing University) ;
  • Jiang, Weimei (School of Atmospheric Sciences, Nanjing University) ;
  • Gao, Zhiqiu (State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences) ;
  • Hu, Fei (State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences) ;
  • Peng, Zhen (School of Atmospheric Sciences, Nanjing University)
  • 투고 : 2008.08.08
  • 심사 : 2009.04.03
  • 발행 : 2009.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Marquardt method is used to estimate the aerodynamic parameters in urban area of Beijing City, China, including displacement length (d), roughness length ($z_0$) and friction velocity (u*) and drag coefficient. The surface drag coefficient defined as the ratio between friction velocity and mean wind speed is 0.125 in our research, which is close to typical urban area value. The averaged d and $z_0$ are 1.2 m and 7.6 m. d and $z_0$ change with direction because of the surface heterogeneity over urban surface and reach their maximum values at S-SW sector, this tendency agrees with the surface rough element distribution around the observation tower.

키워드

참고문헌

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피인용 문헌

  1. Urban heat island and boundary layer structures under hot weather synoptic conditions: A case study of Suzhou City, China vol.28, pp.4, 2011, https://doi.org/10.1007/s00376-010-0040-1
  2. The impact of urbanization on wind speed and surface aerodynamic characteristics in Beijing during 1991–2011 2017, https://doi.org/10.1007/s00703-017-0519-8