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Record 1 1988-04-14


Subject field(s)
  • Atmospheric Physics
  • Environmental Studies and Analyses
  • Air Pollution

Aerodynamic separation. A bluff body exposed to the wind develops a wake with eddies. An analogous situation occurs behind a large rock in a stream. High rise buildings develop wakes .... A low chimney on the roof top can cause high concentrations of pollutants on the leeside as they are trapped in the wake. An empirical rule of thumb for a stack located on or near a building is that the height of the stack is at least two and one half times the height of the building. In the case of a high rise, this is clearly impossible to fulfill. The only alternative is to locate large sources at great distances from tall buildings.


  • Physique de l'atmosphère
  • Études et analyses environnementales
  • Pollution de l'air


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