Porous Chamber Heat Transfer CFD Simulation, Tutorial
$120.00 Student Discount
The problem simulates the airflow and heat transfer inside a cube-shaped chamber consisting of a regular porous medium.
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Description
Porous Chamber Considering Heat Transfer, ANSYS Fluent CFD Simulation Training
The problem simulates the airflow and heat transfer inside a cube-shaped chamber consisting of a regular porous medium by ANSYS Fluent software. The porous medium used in this chamber is in the form of rows and columns of several aluminum balls, the number of which is 343. These aluminum balls have a density of 2719 kg.m-3, a specific heat capacity of 871 j.kg-1.K-1, and thermal conductivity of 0.5 W.m-1.K-1.
The fluid in this chamber is air and there is no special air inlet and outlet for the chamber. The main purpose of this study is to investigate changes in air temperature inside the chamber under the influence of these items as a porous medium. In fact, the upper surface of the chamber has a constant temperature of 323 K and the lower surface has a constant temperature of 273 K, and the side walls are also insulated.
Porous Chamber Geometry & Mesh
The present model is three-dimensional and is drawn using the ِ Design Modeler software. The present model is related to the chamber, which has seven spheres as a porous medium in three different directions. The total number of these spheres is 343. The figure below shows a view of the geometry.
The meshing of the model has been done using ANSYS Meshing software and the mesh type is unstructured. The element number is 3451362. The figure below shows a view of the mesh.
Heat Transfer in a Porous Chamber CFD Simulation
To simulate the present model, several assumptions are considered:
- The solver is a pressure-based perspective.
- The present simulation is steady.
- The gravity of -9.81 m.s-2 is considered.
A summary of the steps for defining a problem and defining its solution is given in the following table:
| (Porous) | Models | |
| Viscous model | k-epsilon | |
| k-epsilon model | standard | |
| near-wall treatment | standard wall function | |
| Energy | on | |
| (Porous) | Boundary conditions | |
| down wall | Wall | |
| wall motion | stationary wall | |
| temperature | 273 K | |
| up wall | Wall | |
| wall motion | stationary wall | |
| temperature | 353 K | |
| sides walls | ||
| wall motion | stationary wall | |
| heat flux | 0 W.m-2 | |
| (Porous) | Solution Methods | |
| Pressure-velocity coupling | Coupled | |
| Spatial discretization | pressure | standard |
| density | 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 m.s-1 | |
| temperature | 298 K |
Results
At the end of the solution process, two-dimensional and three-dimensional contours of velocity, pressure, and temperature, as well as two-dimensional and three-dimensional velocity vectors are obtained.
Call On WhatsApp
Bennett Fritsch –
Is it possible to use this simulation to represent heat transfer in porous media when different fluid properties are involved?
MR CFD Support –
Yes, the simulation can be adjusted to model heat transfer in porous media with a variety of fluid properties. This includes different types of fluids and their specific properties, such as viscosity and thermal conductivity.
Brando Hand –
I want to know how the simulation handles the impact of the porous medium’s material properties on heat transfer?
MR CFD Support –
The simulation takes into account the specific material properties of the porous medium, such as thermal conductivity and specific heat capacity. These properties can be set based on the specific material being simulated.
Lavon Cormier –
How does the simulation account for the porosity of the medium?
MR CFD Support –
The simulation takes into account the porosity of the medium by adjusting the parameters such as permeability and inertial resistance. These parameters can be set based on the specific properties of the porous medium being simulated.
Micah Wisoky –
Can this simulation be used to model heat transfer in different types of porous media?
MR CFD Support –
Absolutely, the simulation can be adjusted to model heat transfer in a variety of porous media. This includes different types of materials, porosities, and permeabilities.
Mr. Diego DuBuque V –
Can this simulation be used to evaluate the performance of different types of heat exchangers?
MR CFD Support –
Yes, the simulation can be used to evaluate the performance of different types of heat exchangers. By accurately simulating heat transfer in the porous medium, it can help identify the most effective heat exchanger designs.