Description

The present study investigates fluid behavior inside porous media by ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.

A porous medium comprises mostly perforated materials and contains pores and void spaces within itself. Various body tissues, such as skin, bones, kidneys, and lungs, can be considered a porous medium.

Porous media are widely used in various industries such as food, oil, textiles, building materials, insulation, filters, and membranes. In this project, fluid flow through a porous medium with three different porosities is investigated.

The fluid domain consists of an upstream flow domain, a porous medium domain, and a downstream flow domain. The geometry of this project is designed in the ANSYS design modeler and is meshed in ANSYS meshing. The mesh type is structured, and the element number is 35017.

Porous Method

The porous tab in the computational zone is used to define the porous medium in this model. The most important factor for defining a porous medium is the porosity coefficient. This value is equivalent to the ratio of empty space to total space.

Whatever this value tends to zero means that fluid can't pass at all, And whatever this value goes to one means that all the fluid passes completely.

In this project, three different porosities have been used to compare the results with each other and thus determine the effect of the presence of a porous medium in the fluid flow. The porosity coefficient used is equal to 0.5, 0.7, and 0.9.

Porous Conclusion

After simulation, the contours of pressure, velocity, turbulent viscosity, and static pressure drop alongside the cube are obtained. The contour and pressure diagram shows that the fluid flow is subjected to pressure drop as it passes through the porous medium.

This phenomenon indicates that the presence of a porous medium properly affects the fluid's behavior because the main task of these porous materials is to reduce the pressure of the passing fluid.