Both XY-Calculation and XZ-Calculation have been used in our simulation. In this way, the physical form of the pollutant plume can be obtained. Calculation in both XY-plane (parallel to ground surface) and XZ-plane (perpendicular to ground surface). The fucshia square represents a point source (stack). The red colour represents high pollutant concentrations. Pollution map of Nitrogen oxides (NOx) produced by en industrial stack. The wind angle is 45 degrees (NE), the wind velocity is 5 m/s and the pollutant flow rate is 1g/s. The fucshia square represents the point source (position of the stack). We have a three-dimensional image of the pollutant plume with these two computer screens.
Pollution map produced by continuous discharge in this region. Top: the orange horizontal line indicates us the position of the XZ-Plane. Bottom: The fucshia line represents a point source (stack). The red colour represents high pollutant concentrations.