Canarina Environmental Software

Canarina DISPER software · NOx air dispersion · algorithms 15

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Canarina DISPER software · NOx air dispersion 


Procedures Used to Account for Buoyancy-Induced Dispersion.

The method of Pasquill is used to account for the initial dispersion of plumes. With this method, the effective vertical dispersion sze is calculated as follows:

 

sigze=[sigz2 +(Dh/3.5)]1/2        (32)

 

where sigz is the vertical dispersion due to ambient turbulence and Dh is the plume rise due to momentum or buoyancy. The lateral plume spread is:

 

sigye=[sigy2 +(Dh/3.5)]1/2        (33)

 

where sigy is the lateral dispersion due to ambient turbulence. It should be noted that Dh is the distance-dependent plume rise if the receptor is located between the source and the distance to final rise, and final plume rise if the receptor is located beyond the distance to final rise. 

 

 

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Canarina DISPER software · NOx air dispersion 

It is interesting for air pollution, nitrogen oxides, air dispersion, nitrogen dioxide, nitric oxide

 

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