Steady state vapor phase transport in homogeneous porous media during infiltration was studied experimentally and numerically. The results showed that models based on the assumption of thermodynamic equilibrium between the dissolved phase and gaseous phase are not always appropriate to describe such transport. An equilibrium model based on the standard convection-dispersion formulation and a nonequilibrium convection-dispersion model both predicted that countercurrent dissolved-phase dispersive phenomena is the predominant transport mechanism. This conclusion is physically incorrect. A model that allows for deviation from thermodynamic equilibrium and for an immobile water fraction was the simplest model capable of simulating the experimental data.
|Original language||English (US)|
|Number of pages||8|
|Journal||National Conference on Environmental Engineering|
|State||Published - Jan 1 1990|
All Science Journal Classification (ASJC) codes
- Environmental Engineering