Algorithms III · software · acid rain pollution
DISPER: 1 indoor air quality solutions 2 environmental science and health 3 air emission monitoring 4 environmental assessment 5 industry air pollution 6 pollution in our atmosphere 7 vehicles air pollution 8 gas dispersion modeling 9 indoor air quality measurement 10 acid rain and air pollution 11 industrial air exhaust 12 air pollution effects 13 acid rain pollution 14 air quality monitoring 15 air pollution model
Plume Rise Formulas
The plume height is used in the calculation of the Vertical Term. The distance dependent momentum plume rise equations are used to determine if the plume is affected by the wake region for building downwash calculations.
In order to consider stack-tip downwash, modification of the physical stack height is performed. The modified physical stack height hs is found from:
hs’=hs+2ds[(vs/us)-1.5] for vs<1.5us (5)
hs’=hs for vs> o =1.5us (6)
where hs is physical stack height (m), vs is stack gas exit velocity (m/s), and ds is stack top diameter (m). If stack tip downwash is not considered, hs’= hs in the following equations.
Buoyancy and Momentum Fluxes
For most plume rise situations, the value of the Briggs buoyancy flux parameter, Fb (m4/s3), is needed
where DT = Ts - Ta, Ts is stack gas temperature (K), and Ta is ambient air temperature (K).
For determining plume rise, the momentum flux parameter, Fm (m4/s2), is calculated based on the following formula:
software · acid rain pollution
Acid rain pollution: The acid rain effects can be modeled through DISPER software. Pollutants with a mean life can be introduced. The software can be used in combination with air monitoring techniques.