Porous Jump in a Perforated Plate CFD Simulation

$80.00 Student Discount

In this project, a Porous Jump, Perforated Plate has been simulated and the results of this simulation have been investigated.

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Description

Porous Jump in a Perforated Plate CFD Simulation, Ansys Fluent Training

Perforated plates have patterns of holes, slots, or decorative shapes. They have a wide area of usage in industrial applications, such as filters, silencers, radiator grilles, ventilation, or separator plates. Porous jump conditions are used to model a thin “membrane” with known velocity (pressure-drop) characteristics. Examples of uses for the porous jump condition include modeling pressure drops through screens and filters and modeling radiators when you are not concerned with heat transfer. Perforated louvers are generally used indoors to permit air movement from one area to another. Perforated louvers are generally used indoors to permit air movement from one area to another.

In this project, We used the Ansys Fluent software to simulate the Porous jump, perforated plated louver. The inlet and outlet boundary conditions are velocity inlet and pressure outlet, respectively. The velocity magnitude is 1.5 meters per second. We have introduced a series of fluid flows into a rectangular cube duct and created a porous series to study the flow behavior and heat transfer. The dimensions of this cube are 1*1*10 cubic meters.

Geometry & Mesh

The 3-D geometry of the present model is generated using Design Modeler software.

Porous Jump

The meshing of the present model has been done using Ansys Meshing software. The mesh type is structured in all of the computational domains, and the element number is equal to 85760.

Porous Jump

Porous Jump CFD Simulation

To simulate the present model, we consider several assumptions:

  • The solver is pressure-based.
  • The current simulation is steady.
  • We ignored the gravity effect.

Here is a summary of the steps for defining the problem and its solution in the following table:

 Models
 

Viscous model

 

 

k-epsilon

 

Material Properties

 

 

Air

 

 

 

 

Density

 

1.225

 

viscosity

 

1.7894e-05

 

anthracite

 

 

Density

 

1550

 Solution Methods
Pressure-velocity coupling  

coupled

Spatial discretization pressure Standard
momentum first-order upwind

 

 

 

 

Volume fraction

 

Geo reconstruct
 

 

 

Turbulent kinetic energy First-order upwind
 

 

 

Turbulent dissipation rate

 

First-order upwind
Initialization
Initialization method Standard (computed from inlet)
Run calculation
Number of time steps 400

In this simulation, two-dimensional contours related to vectors, velocity, pressure, and contour are fluent and CFD-post software.

Velocity vectors show how the flow is aligned through the perforated plate.

Porous Jump

Piping systems often include numerous fittings such as bends (elbows), valves, tees,  enlargements and contractions, and many others. Fluids passing through such fittings inevitably emerge as maldistributed flows, which may be undesirable. Consequently,  there is a clear need to incorporate fixtures in pipelines to improve flow maldistribution.  Perforated plates are a frequently used means of flow homogenization in addition to other flow control applications.

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