NUMERICAL MODELING OF TRANSIENT CONTAMINANT MIGRATION PROBLEMS IN INFINITE POROUS FRACTURED MEDIA USING FINITE INFINITE ELEMENT TECHNIQUE .2. PARAMETRIC STUDY

Using the numerical model presented in the first paper of this researc h,1 a parametric study has been carried out in this paper to investiga te the effect of several important parameters on the transient contami nant transport in infinite porous fractured media. From the related nu merical results, it has been demonstrated that: (1) transmissive coeff icient between the porous block and the fissured network has a signifi cant influence on the value of the concentration but has little effect on the speed of contaminant transport; (2) porosities in the porous b lock and fissured network have a significant influence on the maximum value of the concentration; (3) average linear velocity of flow has a significant influence on both the concentration distribution and speed of contaminant transport; (4) dispersion coefficient of the medium af fects not only the shape of the concentration versus time curve but al so the peak value of the concentration.