Flow Behavior Passing Through a Porous Medium
In this project, fluid flow through a porous medium with 3 different porosities, is investigated.
This ANSYS Fluent project includes CFD simulation files and a training movie.
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Porous Media Introduction
Studying fluid flow in porous media is one of the most widely used fields of science. A porous medium is made up of mostly perforated materials and contains pores and void spaces within itself. Various body tissues such as skin, bones, kidneys, and lungs can be considered as a porous medium. Porous media are widely used in a variety of industries such as food, oil, textiles, building materials, insulation, filters, and membranes.
Flow Behavior Project description
In this project, fluid flow through a porous medium with 3 different porosities, is investigated. The fluid domain consists of an upstream flow domain, a porous medium domain, and a downstream flow domain. The standard k-epsilon model with the use of standard wall function is activated for solving fluid flow inside the computational domain. The energy model is also activated.
Geometry and mesh
The geometry of this project is designed in ANSYS design modeler® and is meshed in ANSYS meshing®. The mesh type is structured and the element number is 35017.
Flow Behavior Passing Through a Porous Medium CFD Simulation Settings
The assumptions considered in this project are:
- Simulation is done using a pressure-based solver.
- The present simulation is steady.
- The effect of gravity has not been taken into account.
The applied settings are recapitulated in the following table.
|near-wall treatment||standard wall function|
|(porous)||Cell zone conditions|
|Porous part||Porous zone|
|Fluid porosity||0.5, 0.7, 0.9|
|Turbulent intensity||5 %|
|Turb. Visc. ratio||10|
|Heat flux||0 W/m2|
|Spatial discretization||pressure||Second-order upwind|
|turbulent kinetic energy||first-order upwind|
|turbulent dissipation rate||first-order upwind|
|Gauge pressure||0 Pa|
|Turbulent kinetic energy||0.06 m2/s2|
|Turbulent dissipation rate||2.218062 m2/s3|
At the end of the solution, we obtain the contours of pressure, velocity, turbulent viscosity, and static pressure drop alongside the cube.
All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.