Jet Combustion

Description

This project uses ANSYS Fluent to simulate multi-jet ethylene-air combustion, applying species transport and reacting flow modeling to a core problem in chemical reaction flow engineering. The simulation examines how multiple angled jets mix and react, capturing the interaction between turbulent flow, species transport, and chemical reaction — relevant to combustion systems across aerospace propulsion, gas turbines, and industrial furnaces.

Methodology

A 2D combustion chamber geometry with multiple jet inlets is built in DesignModeler and meshed in ANSYS Meshing using a structured grid of 9,928 elements. The simulation uses a pressure-based, steady-state solver, with the Species Transport model configured for volumetric reactions to represent ethylene-air combustion, and the Eddy-Dissipation model applied to capture turbulence-chemistry interaction.

Conclusion

Results include pressure, velocity, and temperature contours, along with species concentration distributions showing combustion product formation. The simulation reveals how jet velocity and angle affect mixing and combustion behavior, temperature distributions and peak combustion zones, and the formation of combustion products relevant to emissions. These findings support combustor design optimization for improved combustion efficiency and reduced emissions across aerospace, power generation, and industrial thermal systems.