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Flow Behavior Passing Through a Porous Medium

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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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To order your ANSYS Fluent project (CFD simulation and training), contact our experts via [email protected], online support, and WhatsApp.

Description

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 flow behavior

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.

 
(porous) Models
Viscous model k-epsilon
k-epsilon model Standard
near-wall treatment standard wall function
Energy on
(porous) Cell zone conditions
Porous part Porous zone  
Fluid porosity 0.5, 0.7, 0.9
(porous) Boundary conditions
Inlet velocity inlet
velocity 4 m/s
Turbulent intensity 5 %
Turb. Visc. ratio 10
Temperature 823 K
Outlet Pressure outlet
Walls Stationary wall
Heat flux 0 W/m2
Pressure-velocity coupling   SIMPLE
Spatial discretization pressure Second-order upwind
momentum second-order upwind
energy second-order upwind
turbulent kinetic energy first-order upwind
turbulent dissipation rate first-order upwind
(porous) Initialization
Initialization method   Standard
Gauge pressure 0 Pa
Velocity(x,y,z) (0,0,4) m/s
Turbulent kinetic energy 0.06 m2/s2
Turbulent dissipation rate 2.218062 m2/s3
Temperature 823.15 K

Results

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.

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