Wind and Structures

  • 제4권3호
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  • Pages.227-246
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  • 2001
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A model of roof-top surface pressures produced by conical vortices : Model development

  • Banks, D. (Fluid Mechanics and Wind Engineering Program, Civil Engineering Department, Colorado State University(CSU)) ;
  • Meroney, R.N. (Fluid Mechanics and Wind Engineering Program, Civil Engineering Department, Colorado State University(CSU))
  • 발행 : 2001.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The objective of this study is to understand the flow above the front edge of low-rise building roofs. The greatest suction on the building is known to occur at this location as a result of the formation of conical vortices in the separated flow zone. It is expected that the relationship between this suction and upstream flow conditions can be better understood through the analysis of the vortex flow mechanism. Experimental measurements were used, along with predictions from numerical simulations of delta wing vortex flows, to develop a model of the pressure field within and beneath the conical vortex. The model accounts for the change in vortex suction with wind angle, and includes a parameter indicating the strength of the vortex. The model can be applied to both mean and time dependent surface pressures, and is validated in a companion paper.

키워드

과제정보

연구 과제 주관 기관 : US National Science Foundation

참고문헌

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피인용 문헌

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  2. Characteristics of dynamic pressures on a saddle type roof in various boundary layer flows vol.150, 2016, https://doi.org/10.1016/j.jweia.2015.11.012
  3. An experimental study of flow fields and wind loads on gable-roof building models in microburst-like wind vol.54, pp.5, 2013, https://doi.org/10.1007/s00348-013-1511-9
  4. A model of roof-top surface pressures produced by conical vortices : Evaluation and implications vol.4, pp.4, 2001, https://doi.org/10.12989/was.2001.4.4.279
  5. Aerodynamic mitigation of wind-induced uplift forces on low-rise buildings: A comparative study vol.5, 2016, https://doi.org/10.1016/j.jobe.2016.01.007
  6. Improvement and validation of a flow model for conical vortices vol.19, pp.2, 2014, https://doi.org/10.12989/was.2014.19.2.113
  7. Simplified elements for wind-tunnel measurements with type-III-terrain atmospheric boundary layer vol.91, 2016, https://doi.org/10.1016/j.measurement.2016.05.078
  8. Full-scale validation of vortex suppression techniques for mitigation of roof uplift vol.31, pp.12, 2009, https://doi.org/10.1016/j.engstruct.2009.07.021
  9. Local peak pressure and conical vortex on building vol.90, pp.4-5, 2002, https://doi.org/10.1016/S0167-6105(01)00218-5
  10. Aerodynamic Mitigation of Roof and Wall Corner Suctions Using Simple Architectural Elements vol.139, pp.3, 2013, https://doi.org/10.1061/(ASCE)EM.1943-7889.0000505
  11. Influence of spacing parameters on the wind loading of solar array vol.48, 2014, https://doi.org/10.1016/j.jfluidstructs.2014.03.005
  12. Development and Verification of a Flow Model of Conical Vortices on Saddle Roofs vol.141, pp.3, 2015, https://doi.org/10.1061/(ASCE)EM.1943-7889.0000848
  13. Stationary vortices attached to flat roofs vol.98, pp.1, 2010, https://doi.org/10.1016/j.jweia.2009.09.001
  14. Wind Tunnel Analysis of the Aerodynamic Loads on Rolling Stock over Railway Embankments: The Effect of Shelter Windbreaks vol.2014, 2014, https://doi.org/10.1155/2014/421829
  15. Component and Cladding Wind Loads for Low-Slope Roofs on Low-Rise Buildings vol.144, pp.4, 2018, https://doi.org/10.1061/(ASCE)ST.1943-541X.0001989
  16. The applicability of quasi-steady theory to pressure statistics beneath roof-top vortices vol.89, pp.6, 2001, https://doi.org/10.1016/s0167-6105(00)00092-1
  17. Ridge and field tile aerodynamics for a low-rise building: a full-scale study vol.16, pp.4, 2001, https://doi.org/10.12989/was.2013.16.4.301
  18. A computational study of laminar-flow secondary separation on a slender delta wing vol.122, pp.1256, 2001, https://doi.org/10.1017/aer.2018.92
  19. On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure vol.10, pp.15, 2001, https://doi.org/10.3390/app10155283