Background to TCWEs Environmental Wind Engineering Committee

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Background to TCWEs Environmental Wind
Engineering Committee

• Richard Aynsley, Big Ass Fan Company, Lexington,
  KY
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Background

• The ASCE Aerodynamics Committee of Aerospace
  Division was formed in 1976.
• It was reconstituted in 2007 as the
  Environmental Wind Engineering Committee of the
  new TCWE
• Technical Council on Wind Engineering.

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Committees Promotional Role

• City planners and urban designers need to be
  aware of tools and quantitative techniques used
  by wind engineers in urban aerodynamics and how
  they can benefit from adopting quantitative
  techniques in lieu of an intuitive approach.

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Historical Precedence Kahan
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China
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Buenos Aires
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Letchford UK
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Booklet

• Designing tall buildings in the 1970s
  presented problems with respect to the simplistic
  wind load code of the time.
• Boundary layer wind tunnels were developed to
  provide more detailed information on total winds,
  cladding loads, and safety of wind conditions at
  pedestrian level around buildings.

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Wind Climate
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Wind Climate
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Wind Climate
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Wind Tunnel Studies

• Most wind tunnel studies related to a single
  building or structure, but some studies
  considered broader regions with respect to
  airborne pollution or relative wind speeds over
  complex topography.

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Urban Wind Tunnel Studies
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BLWT Studies
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Bluff Body Aerodynamics
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Wind Resistant Low-Rise Buildings
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Dynamic Response of Structures
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Complexities of Discharge
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Pedestrian Level Winds
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Pedestrian Level Winds
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BLWT Studies
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Water Tunnel Studies
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Water Tunnel Studies
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Wind DamageWilma
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Computational Fluid Dynamics

• Rapid increase in computing speed of smaller
  computers has made CFD accessible to a much wider
  range of people interested in environmental
  aerodynamics.

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Ground Level Wind Studies
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CFD Analysis of Complex Air Flow
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CFD Analysis of Complex Air Flow
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Thank you for your time.

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