Autors: Sahami M., Pitchurov G., Vasilev M., Terziev, A. K., Ivanov, M. P., Marinov, P. A.
Title: CFD Analysis of the Non-Premixed Combustion of Methane-Air Enriched by Hydrogen
Keywords: Combustion, emission, flame, hydrogen, methane

Abstract: The increasing demand for cleaner energy sources has positioned hydrogen as a promising alternative fuel to conventional hydrocarbons. However, its unique combustion properties, such as low ignition energy and high flame speed, pose operational challenges like premature ignition and flashback. Therefore, this study addresses these issues by investigating the combustion characteristics of a hydrogenmethane (CH4/ H2) blend, which offers a practical solution for leveraging hydrogen benefits while mitigating its drawbacks. Using Computational Fluid Dynamics (CFD) with the commercial software ANSYS Fluent, a numerical simulation of non-premixed turbulent combustion in a 2D chamber is performed. The model employed the standard k-ϵ turbulence model coupled with the Probability Density Function (PDF) non-premixed combustion model. The analysis focuses on the effects of lean hydrogen enrichment and varying air mass flow rates on key combustion parameters, including temperature, velocity fields, and emission profiles. The findings aim to establish viability thresholds for using CH4/ H2 blends in applications such as steam boiler combustors, contributing to the development of sustainable energy systems with reduced emissions and improved efficiency.

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Issue

2025 10th International Conference on Energy Efficiency and Agricultural Engineering, EE and AE 2025 - Conference Proceedings, 2026, Albania, https://doi.org/10.1109/EEAE65901.2025.11273528

Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus