TITLE : EXHAUST DISPERSION NEAR IN A STREET CANYON

BY : A A Yakushin and S V Zhubrin, CHAM-MEI

DATE : 1993, 1996

FOR : Industrial client

PHOENICS version: 2.1, 2.2.1

DETAILS :

• This is an example of modelling urban pollution. The wind flows around a 31-storey tower block with a low rise block on the other side of the street.

• The source of pollution comes from the vehicular exhaust. The road passes between two residential blocks.

• This example, in fact, shows how the wind profile can be set by defining several 'fans' with height-dependent inflows.

Pictures are as follows :

• Velocity vectors..
  
• Temperature isosurface in street canyon..
  
• Streamlines of the flow in street canyon..
  
• Computations against experiment for velocity at the downwind building face..
  
• Computations against experiment for NOx concentration at the downwind building face..