Wind Flow Around Three Buildings CFD Simulation, ANSYS Fluent Tutorial

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  • The problem numerically simulates the Wind Flow Around Three Buildings using ANSYS Fluent software.
  • We design the 3-D model by the Design Modeler software.
  • We mesh the model with ANSYS Meshing software, and the element number equals 6392910.

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If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.



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.


  1. Frieda Breitenberg

    I’m interested in simulating wind flow around a cluster of high-rise buildings. Do you think this simulation can handle that?

    • MR CFD Support

      Definitely, this simulation is designed to handle complex geometries, including clusters of high-rise buildings. It can accurately simulate the complex wind flow patterns that occur in such scenarios

  2. Mr. Lincoln Fay I

    Can this simulation be used to evaluate the impact of wind on building energy consumption?

    • MR CFD Support

      Yes, the simulation can be used to evaluate the impact of wind on building energy consumption. By accurately simulating wind flow around buildings, it can help identify areas of potential energy loss due to wind.

  3. Dr. Julie Ward V

    How does the simulation handle wind direction? Can it simulate wind coming from different directions?

    • MR CFD Support

      Absolutely, the simulation is flexible and can be adjusted to simulate wind coming from any direction. This is crucial for accurately predicting how wind will interact with buildings in real-world conditions.

  4. Manuel Bartell

    I noticed that this simulation uses the k-epsilon turbulence model. Why was this model chosen over other turbulence models?

    • MR CFD Support

      The k-epsilon model is a popular choice in the CFD community, especially for simulations involving complex geometries like buildings. It offers a good balance between accuracy and computational efficiency. However, we can certainly use a different turbulence model if your project requires it.

  5. Garrett White

    I took this because studying my field of work was very interesting, and I am working in this field now.

  6. Reanna Grady

    MR-CFD has a very good expression.

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