The initial phase of a chemical emission, characterized by temperature higher than the surrounding air and/or by an initial vertical velocity, is creating conditions for an initial rise of the plume. The rise stops when the plume becomes in equilibrium with the surrounding air. Almost all air quality models include special calculations for the simulation of the plume rise.
A review paper on plume rise is included as a pdf file.
Guide prepared by P. Zannetti (9/2020). For corrections or expansions please contact us.