The verification of radon protective measures by means a computer model

The numerical model for verification of various radon protective measures has been developed. This model is based on the partial differencial equation for the two-dimensional steady-state radon transport caused by diffusion and convection. The finite element method was used to obtain the numerical solution of the governing equation. The general finite element formulation was derived by means of the Petrov-Galerkin method with weighting functions different from interpolation functions. The performance of soil ventilation systems has been studied with this model. The results of simulation demonstrate that the soil depressurization systems are effective in the majority of cases while the soil pressurization systems only in case of permeable soils.