*Applications of Computational Fluid Dynamics Simulation and Modeling*

Overall, the best results were obtained with simplified models using a 2D geometry representative of the proposed systems with single and double porous media layer, an example of 2D model geometry used is shown in **Figure 3**. The figure illustrates a slice of the interacting materials stacked from top to bottom with a first layer of water on top, followed by two layers composed with porous materials ordered in zeolite placed over soil and at the bottom more water. **Figure 3(a)** was obtained from ANSYS SpaceClaim where it may be optional to label each layer but also labels may be added in the meshing module. The geometry was simplified to a basic shape, as can be observed in **Figure 3(b)**. Thus, the model was easily

#### **Figure 3.**

*Simplification to a 2D model of the double layer with soil zeolite on top of soil as loaded in ANSYS for meshing procedures and mesh obtained (see scale for length dimensions under the model image).*

discretized by using ANSYS meshing module with an average size element of 6.5x10<sup>5</sup> m (0.065 mm) which in total added up to 473,550 elements. The discretization results may be observed in **Figure 3(c)** and **(d)**.
