Keywords

coal combustion simulation

Abstract

An axisymmetric, elliptic model has been developed for analysis of confined, turbulent coal-laden diffusion flames. The scheme is Eulerian for gases and Lagrangian for particles. The approach emphasizes the turbulent fluid mechanics of the mixing-limited gas phase reaction processes. The two-equation (k-─ e) turbulence model is used for closure. Particle drag and turbulent particle diffusion are also modeled. Gaseous combustion is modeled with a probability density function for the mixture fraction. Fluctuations in mixing of inlet streams and coal off-gas are considered. Coal pyrolysis and oxidation reaction processes are assumed to be slow with respect to the turbulent time scale. Particle and gas radiation are incorporated by a flux method. Predictions emphasize the importance of turbulent particle dispersion.

Original Publication Citation

Smith, P. J., T. H. Fletcher, and L. D. Smoot, "Model for Coal-Fired Reactors," Eighteenth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, p. 1285 (1980).

Document Type

Peer-Reviewed Article

Publication Date

1981

Publisher

The Combustion Institute

Language

English

College

Ira A. Fulton College of Engineering and Technology

Department

Chemical Engineering

University Standing at Time of Publication

Graduate Student

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