*Applications of Computational Fluid Dynamics Simulation and Modeling*

is called SpaceClaim. A CAD program enables further development and a highly detailed design, which is interesting for complex developments. For the scope of this work, SpaceClaim was used to prepare the geometry for CFD. **Figure 1** shows the geometry preparation in different steps up to the meshing generation.

Meshing procedure was carried on ANSYS meshing module, since the geometry is a simple cylinder, the discretization process was easily resolved. The meshing model was carried on systematically with a different number of elements, from a

#### **Figure 1.**

*Geometry used to simulate a single layer of zeolite exposed to water flow from top to bottom. (a) CAD geometry for zeolite single layer interacting with water, (b) CAD geometry of fluid and porous zone without pipe and covers. (c) Fluid domain prepared in ANSYS for CFD simulation, (d) meshed fluid domain.*

*A CFD Porous Materials Model to Test Soil Enriched with Nanostructured Zeolite Using… DOI: http://dx.doi.org/10.5772/intechopen.100487*

rough mesh to a finer mesh in search of the more efficient model. Overall, under 100 thousand elements was considered a rough mesh, up to 500 thousand elements is medium and over that number of elements is considered a fine mesh. The models used in 3D demonstrated a nice performance during the convergence trials (**Figure 2**), however, if a further simplification is found, it should be considered.

Therefore, 2D models were developed to improve efficiency in our calculations. The 2D model worked very well and improved efficiency so we decided to present the results generated with these models.

#### **Figure 2.**

*Geometry used to simulate a layer of zeolite over a layer of soil exposed to water flow from top to bottom. (a) CAD geometry for zeolite-soil porous layers interacting with water, (b) CAD geometry of fluid and porous zone without pipe and covers. (c) Fluid domain prepared in ANSYS for CFD simulation, (d) meshed fluid domain.*
