Flare System Considering Combustion, CFD Simulation, ANSYS Fluent Training

$240.00 Student Discount

  • The problem numerically simulates the Combustion in a Gas Flare system using ANSYS Fluent software.
  • We design the 3-D model by the Design Modeler software.
  • We Mesh the model by ANSYS Meshing software, and the element number equals 1043138.
  • We use the Species Transport model to define the chemical reaction.

Special Offers For Single Product

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 current project simulates combustion in a gas flare system using ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.

The present model is designed in three dimensions using Design Modeler software. Due to the model’s symmetrical structure and to reduce the computational cost, only a 120-degree segment of the geometry is modeled.

The flare model has a cylindrical structure located inside a cylindrical computing space. Different sections, such as steam, gas flow, and pilot, are defined at the tip of the flare.

The meshing of the model has been done using ANSYS Meshing software. The element number is 1043138.

Flare Methodology

The flare system, also known as a gas flare, is a combustion device used in industrial units such as oil and gas refineries and the production of oil and gas wells, especially on offshore platforms. The Species Transport model has been used to carry out this project.

The transition species’ defined material is an n-butane-air mixture consisting of 9 gaseous species, including C4H10, O2, CO2, H2O, H2, CH4, C2H6, C3H8, and N2.

The volumetric model is also activated to activate chemical reactions and, consequently, the combustion process. This burning process consists of five different chemical reactions in the following form.


At the tip of the flare, a gas flow with a flow rate of 0.09259 kg/s enters the environment in the form of a combination of hydrocarbons. At the same time, a methane flow from the pilot flame and a steam flow from the steam inlet boundary, both at velocities of 2.479 m/s, enter the domain to ignite the mixture.

Also, the standard k-epsilon model can solve the turbulent fluid equations and the energy equation, which is used to calculate the temperature change within the combustion chamber.

Flare Conclusion

At the end of the solution process, three-dimensional contours related to the velocity and mass fraction of each gas species modeled in this simulation are obtained.

For example, by examining the three-dimensional contour of carbon dioxide gas, it can be well understood that the chemical reaction of combustion and carbon dioxide gas production is performed.

Also, as can be seen, the mass fraction of species considered in the fuel mixture decreases as we get away from the fuel inlet boundary. In contrast, the mass fractions of chemical species of reaction products increase along this way.


  1. Milton Parisian

    What are the potential applications of this simulation?

    • MR CFD Support

      This simulation can be used in a variety of industrial applications where flare systems are used, such as oil and gas production, chemical manufacturing, and waste treatment facilities.

  2. Krista Christiansen

    How does the flare system work in this CFD simulation?

    • MR CFD Support

      The flare system in this CFD simulation works by burning off the unwanted gases during industrial processes. It ensures that these gases are safely disposed of, reducing the risk of explosion and minimizing the environmental impact.

  3. Priscilla Vandervort

    How can I customize the simulation for my specific needs?

    • MR CFD Support

      The simulation can be customized by changing the properties of the gas and the flare system according to your needs. You can also modify the boundary conditions to match your specific situation.

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