A 2D BOUNDARY ELEMENT FORMULATION FOR POLLUTANT DISPERSION ON THE ATMOSPHERIC BOUNDARY LAYER

Resumo

This paper presents a boundary element formulation for 2D, steady-state advection-diffusion
problems with a variable velocity field and punctual source terms. The boundary and the variables are
discretized with continuous linear elements. The domain effects are computed with discontinuous linear
cells. The model shows good agreement with analytical results for variable velocity fields. Four cases
are presented with wind configuration typical of the atmospheric boundary layer - a combination of wind
power classes 1 and 4 for mean velocity, and open flat terrain and suburban areas for roughness. The
response of a unitary point source is analyzed and compared for each case.