

INVESTIGATION OF TURBULENCE AND DEVOLATILIZATION MODELS ON THE IGNITION AND COMBUSTION OF PULVERIZED COAL
Kuznetsov V.A.^{1}, Chernetskiy M.Yu.^{1,2}, Dekterev A.A.^{1,2}
^{1} Siberian Federal University, Krasnoyarsk, Russia ^{2} Institute of Thermophysics SB RAS, Novosibirsk, Russia
Citation:
Kuznetsov, V.A., Chernetskiy, M.Yu. and Dekterev, A.A., (2015) Investigation of turbulence and devolatilization models on the ignition and combustion of pulverized coal, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(16), PP. 149  152.

Keywords: pulverized coal combustion; swirl burner; RANS methods; Reynolds stress model; devolatilization model 
Abstracts:
The paper presents the results of computational studies of the effect of turbulence models and models yield of volatile substances on the processes of ignition and combustion of pulverized coal in the swirling flow at the burner capacity 2.4 MW. Comparison of the results of mathematical modeling and experimental data on the combustion of coaldust flame showed that the model of turbulence kε distribution satisfactorily describes the main characteristics of the flow in the presence of coal fuel combustion processes. Consideration of several models yield of volatile substances: singlestage and twostage approach and models based on the structural features of the structure of the carbon material showed that when choosing the correct values of the kinetic constants and the parameters characterizing the structure of coal, calculation results are consistent with experimental data on the combustion of coal dust. 
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