heat and contaminant transport in unsaturated soil

solute transport in unsaturated porous media can be viewed as a coupled phenomenon with waterand heat transport, together with mechanical behaviour of media. in this paper, solute transport is formulatedmathematically considering heat and water flow in deformable porous media. advection, dispersion anddiffusion of chemical species in the liquid phase are considered. convection and conduction for heat flow istaken into account. water flow is considered in both vapour and liquid phases. equilibrium equation, energyconservation, mass conservation and linear momentum for water, gas and solute are written and solvedsimultaneously using finite element method. the developed model is validated by solving some examples andcomparing results with the results of experimental observation.