Wind and Structures

  • 제5권6호
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  • Pages.515-526
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  • 2002
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Wind flow over sinusoidal hilly obstacles located in a uniform flow

  • 투고 : 2001.03.05
  • 심사 : 2002.03.22
  • 발행 : 2002.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

The wind flow over two-dimensional sinusoidal hilly obstacles with slope (the ratio of height to half width) of 0.5 has been investigated experimentally and numerically. Experiments for single and double sinusoidal hill models were carried out in a subsonic wind tunnel. The mean velocity profiles, turbulence statistics, and surface pressure distributions were measured at the Reynolds number based on the obstacle height(h=40 mm) of $2.6{\times}10^4$. The reattachment points behind the obstacles were determined using the oil-ink dot and tuft methods. The smoke-wire method was employed to visualize the flow structure qualitatively. The finite-volume-method and the SIMPLE-C algorithm with an orthogonal body-fitted grid were used for numerical simulation. Comparison of mean velocity profiles between the experiments and the numerical simulation shows a good agreement except for the separation region, however, the surface pressure data show almost similar distributions.

키워드

참고문헌

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피인용 문헌

  1. Numerical simulation of flow past 2D hill and valley vol.7, pp.1, 2004, https://doi.org/10.12989/was.2004.7.1.001
  2. Investigation of three-dimensional wind flow behaviour over coastal dune morphology under offshore winds using computational fluid dynamics (CFD) and ultrasonic anemometry vol.36, pp.8, 2011, https://doi.org/10.1002/esp.2139
  3. Numerical Evaluation of Wind Flow over Complex Terrain: Review vol.17, pp.4, 2004, https://doi.org/10.1061/(ASCE)0893-1321(2004)17:4(135)
  4. Airflow reversal and alternating corkscrew vortices in foredune wake zones during perpendicular and oblique offshore winds vol.187, 2013, https://doi.org/10.1016/j.geomorph.2012.12.037
  5. Wind flow simulations on idealized and real complex terrain using various turbulence models vol.75, 2014, https://doi.org/10.1016/j.advengsoft.2014.05.002
  6. Escoamento Atmosférico sobre uma Colina Isolada Revelado a Partir de Dados de um Veículo Aéreo não Tripulado (VANT) vol.34, pp.2, 2002, https://doi.org/10.1590/0102-77863340028