Description

The problem simulates the airflow through three buildings which are arranged in a triangular shape by ANSYS Fluent software. In fact, these buildings are considered barriers.

In the present case, the area around the three buildings is considered, where the wind enters it horizontally at a velocity of 5 m/s and collides with the buildings.

The purpose of this project is to investigate the behavior of wind flow around buildings after dealing with them and to study the behavior of air in the space between the buildings.

Buildings Methodology

The present 3-D modeling is carried out using the Design Modeler software. The meshing of the model has been done using ANSYS Meshing software and the mesh type is unstructured. The element number is 6392910 and the cells adjacent to the structures are much smaller and more accurate.

Buildings Conclusion

After the solution process is complete, we obtain contours of velocity and pressure, and also velocity vectors and two-dimensional pathlines.

Speed contours and flow lines show that the wind flow has reached its maximum value when it hits the tip of the building, and then a separation vortex is formed behind the building.

The separation vortex formed behind the middle building, unlike the other two buildings, is symmetrical. In fact, the two vortices are interconnected, and the resulting vortex is larger than the separation vortex formed behind the other two buildings.

The pressure contour also shows well that the most pressure occurs in front of the middle building.