Point source atmospheric diffusion

2012 ◽  
pp. 41-72
Keyword(s):  
Point Source ◽  
Atmospheric Diffusion

Point source atmospheric diffusion

2012 ◽  
pp. 21-51
Author(s):  
Borivoj Rajković ◽  
Ilija Arsenić ◽  
Zoran Grsić
Keyword(s):  
Point Source ◽  
Atmospheric Diffusion

Point source atmospheric diffusion model

1976 ◽  
Vol 10 (5) ◽  
pp. 418
Author(s):  
R.K. Dumbauld ◽  
J.F. Bowers
Keyword(s):  
Point Source ◽  
Diffusion Model ◽  
Atmospheric Diffusion

scholarly journals The Time Evolution of a Constant Mass of Air Pollutant Emitted by a Point Source

2006 ◽  
Vol 11 ◽  
pp. 79
Author(s):  
M.H.A. Hassan ◽  
I.A. Eltayeb
Keyword(s):  
Point Source ◽  
Integral Transform ◽  
Ground Level ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
Accumulation Point ◽  
Air Pollutant ◽  
Constant Mass ◽  
Atmospheric Diffusion ◽  
Transient Behaviour

The transient behaviour of a constant mass (i.e. a blob) of pollutant released from a point source at a height, , above ground level at time  is studied. The time dependent atmospheric diffusion equation in the presence of diffusion in both horizontal and vertical directions is used to model the problem. The model is found to be governed by an initial-boundary-value problem for the concentration of the pollutant. The solution is obtained in closed form using integral transform methods. The solution is illustrated graphically using appropriate numerical integrations. As time passes, the pollutant blob moves with a central point of accumulation of pollutant while the blob increases in volume to spread the pollutant around it. The motion of the accumulation point in space and time is strongly influenced by wind and gravity while the spread of the pollutant is governed by diffusion. The time taken by the blob to diffuse into space is estimated as a function of the parameters governing wind, gravity and diffusion.   

Sign in / Sign up

Export Citation Format

Share Document