# Pollution Simulator

### Abstract

The aim of this project was creation of the mathematical
model and application of the simulation of dispersion of vehicular air
pollution in urban area. The objective of the project was to develop an
application, which time and memory complexity would allow operate on most
of the personal computers. The final application is created as a result
of integration of two projects concerning development of the simulation
and development of the visualisation and user interface (Kawulok, 2001).

A grid of squares is used to model the area of the city.
Movements of particles of pollutants between squares are modelled using
the solution of diffuse differential equation developed to the requirements
of three dimensions of the city and the simulation. The final form of the
simulation was adjusted to the real conditions using available data sets
of the measurements.

Development of the project’s software covers implementation
of the simulation and implementation of the database including input data
of the simulation. The implementation of the application was carried out
carefully with the special consideration of the efficiency objectives of
the project.

There are two areas of the future development of the application.
The first one may include improvement of the results of existing application
using new available measurements. The other one covers addition of new,
more advanced functionality considering bigger set of the input data of
the simulation.

### Results

The quality of the results received from the created application
differ with the conditions of simulation. The comperison of the results
of the simulation with the predictions of the model presented by Matzoros
and Van Vliet and the measurements gathered at the simulated area shows
the abilities of the created model.

*The results of twenty four hours simulation. Concentration
of pollution when the average wind velocity is 5.25m/s and the average
temperature is 7.3°C.*

The coefficients of deviation, relative deviation and correlation, calculated for the simulation shown above have a form:

| Deviation [g/m^3] | Relative deviation [%] | Correlation |

Simulation | 0.000529 | 28.0661 | 0.7777 |

The model of Matzoros and Van Vliet | 0.000597 | 28.0486 | 0.772925 |

Back to the home page of Pollution Simulator