Question

In: Civil Engineering

For dispersion modeling we want to find the concentration of a pollutant at a location (x,y,z)...

For dispersion modeling we want to find the concentration of a pollutant at a location (x,y,z) in 3-D space, relative to a point source at (0,0,H). How is the x distance downwind accounted for in the Gaussian dispersion equation?

Solutions

Expert Solution

X -value is taken as the downwind distance from stack at (0,0,0) to the point at which we want to calculate the concentration..It is given in the figure shown above.

This is the guassian dispersion equation

For maximum downwid concentration ,y value = 0,because the pollutant concentraion is maximum along the plume centreline

The variables z &y are function of X thats how the X distance downwind is incorporated in the guasssian equation.

the value of z &y are taken from pasquil curve

this implies x- distance is taken for the downwind pollutant concentration using guassian plume model

Ally Wells answered 6 months ago
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