2015 1(16)

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Pages:

149 - 152

Language:

RU

Ref.:

8


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2015_1(16)_28.pdf

 

 

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 coal-dust flame showed that the model of turbulence k-ε 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: single-stage and two-stage 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.


References:

  1. Peters A.A.F., Weber R. Mathematical Modeling of a 2.4 MW Swirling Pulverized Coal Flame // Combustion Science and Technology. 1997. V. 122. I. 1-6. P. 131-182.

  2. Launder B.E., Spalding D.B. Lectures in mathematical models of turbulence. London: Academic Press, 1972. 236 p.

  3. Smirnov P.E., Menter F.R. Sensitization of the SST turbulence model to rotation and curvature by applying the Spalart-Shur correction term // Journal of Turbomachinery. 2009. V. 131. I. 4. P. 1-8.

  4. H. Kobayashi, J.B. Howard, A.F. Sarofim, Proc. Combust. Inst. 16 (1977) 411-425.

  5. C.P. Cho, S. Jo, H.Y. Kim, S.S. Yoon, Numer. Heat Transfer, Part A: Appl. 52 (2007) 1101-1122.

  6. S.K. Ubhayakar, D.B. Stickler, C.W. von Rosenberg, R.E. Gannon, Proc. Combust. Inst. 16 (1976) 427-436.

  7. T.H. Fletcher, A.R. Kerstein, R.J. Pugmire, D.M. Grant, Energy Fuels 4 (1990) 54-60.

  8. Genetti D, Fletcher TH. Predicting C NMR measurements of chemical structure based on the elemental composition and volatile matter content of coal. Utah: Brigham Young University, Department of Chemical Engineering; 1998

 

 
     

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