Combusting Particles in a Combustion Chamber

Combustion Chamber CFD Simulation with Combusting Particle, ANSYS Fluent Training

Description

This project simulates a combustion chamber involving combusting particles using ANSYS Fluent, with the 3D geometry designed in SpaceClaim and the domain meshed in ANSYS Meshing using a structured grid totaling 125,000 cells. Given the nature of this problem, the simulation was run using a transient solver to capture the time-dependent behavior of the combustion process as it develops within the chamber.

Methodology

Given the continued industrial reliance on coal and the growing importance of developing cleaner coal combustion technologies, accurately modeling coal combustion characteristics remains an important area of study. This simulation uses a two-way Discrete Phase Model (DPM) for particle tracking, with anthracite — the highest-calorific-value type of coal — used as the injected material, while the Species Transport model with its volumetric sub-model was enabled to capture the combustion reaction itself. Particles were injected into the domain at a velocity of 1 m/s and a temperature of 308 K over a 1-second injection period, with turbulence resolved using the standard k-epsilon model and the energy equation enabled to capture temperature variation throughout the domain as combustion progresses.

Conclusion

Results include 2D and 3D contours of temperature along with particle track visualizations, confirming that effective combustion occurred within the chamber. The average chamber temperature reached 3765.30 K, a result consistent with the high calorific value expected from anthracite combustion and indicative of a well-sustained reaction throughout the injection period.