Numerical Simulation of Turbulence-Chemical Interaction Models on Combustible Particle MILD Combustion

Abstract:

Typical combustible particle coal has been analyzed by using turbulence-chemistry interaction models to realize which models are more accurate and reasonable on pulverized coal MILD combustion. Three turbulence-chemistry interaction models are examined: the Equilibrium Mixture Fraction/PDF (PDF), the Eddy Break Up (EBU), the Eddy Dissipation Concept (EDC). All of three models can give a suitable prediction of axial velocity on combustible particle coal MILD combustion because turbulence-chemistry interaction models have little influence on flow field and flow structure. The Eddy Dissipation Concept model (EDC), based on advanced turbulence-chemistry interaction with global and detailed kinetic mechanisms can produce satisfactory results on chemical and fluid dynamic behavior of combustible particle coal MILD combustion, especially on temperature and species concentrations.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1752-1757
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1752
• Online since: December 2014
• Authors: Bin Xian Shen, Wei Qiang Liu
• Keywords: Combustible Particle, EDC, MILD Combustion, Turbulence-Chemical Interaction

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