Perforated Plate (Porous Zone) Inside 3D Channel CFD Simulation

Perforated Plate (Porous Zone) Inside 3D Channel CFD Simulation, ANSYS Fluent Tutorial

Description

In this project, a channel equipped with a Perforated Plate is simulated in 3-dimensional. Water enters the domain from the inlet with a 5m/s velocity magnitude and collides with the porous zone. This interaction results in a sudden pressure drop.

The 3D geometry was modeled in Design modeler software. A channel with a 1-meter length in the z-direction and a perforated plate is located 40 cm away from the inlet. In addition, a Structured mesh grid was carried out using ANSYS Meshing software, and overall, 14,544 elements were generated.

This CFD project is the 7th episode of the ANSYS Fluent General Training Course.

Methodology: perforated plate (Porous Zone) inside 3D Channel

The pressure-based solver is employed due to the incompressibility of the water. The gravitational acceleration is applied in the negative direction of the Y-axis.

Also, the porous model is used inside the channel.

Conclusion

The water flow enters the channel with a 5m/s velocity magnitude. After a while, a collision with a perforated plate with 0.25 porosity causes an extreme pressure drop. As can be seen in the following plot, the amount of pressure drop decreases suddenly from 55,000 to almost zero. Also, this pressure drop is clearly visible in the 2D and 3D contours above.

Concerning the velocity magnitude of water inside the channel, it starts to increase from the entrance until it reaches the porous zone. Due to the interactions inside the porosity, the velocity decreases and after that starts to increase with the same slope it had at the beginning.