3D modeling of the aerodynamics and heat transfer in the combustion chamber of the BKZ-75 boiler of the Shakhtinsk cogeneration plant

The processes of heat and mass transfer occurring in real furnaces of the industrial TPS’s have been investigated with the aid of advanced methods of the three-dimensional computer modeling. The computational experiments have been done on the study of the aerodynamics of high-temperature flows and h...

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Bibliographic Details
Published in:Thermophysics and aeromechanics 2019-03, Vol.26 (2), p.295-311
Main Authors: Askarova, A. S., Bolegenova, S. A., Maximov, V. Yu, Beketaeva, M. T.
Format: Article
Language:English
Subjects:
Aerodynamics
Cogeneration
Combustion chambers
Furnaces
Heat
Heat flux
Heat transfer
High temperature
Mass transfer
Mathematical models
Numerical methods
Physics
Physics and Astronomy
Temperature distribution
Thermodynamics
Three dimensional models
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Summary:The processes of heat and mass transfer occurring in real furnaces of the industrial TPS’s have been investigated with the aid of advanced methods of the three-dimensional computer modeling. The computational experiments have been done on the study of the aerodynamics of high-temperature flows and heat transfer characteristics at a combustion of a low-grade Karaganda coal of the KR200 brand in the combustion chamber of the BKZ-75 boiler of the Shakhtinsk TPS. As a result of the execution of numerical experiments, the aerodynamic pattern of high-temperature flows as well as the temperature distribution in the main cross sections of the furnace chamber and along its height have been obtained. The radiation heat flux on the combustion chamber walls has been computed by the methods of numerical modeling, which has enabled the determination of the regions of its maximum action on furnace shields. The obtained pattern of the distribution in the furnace space of the heat release intensity at combustion determines the regions of the maximum interaction of the fuel and oxidizer.
ISSN:0869-8643
1531-8699
DOI:10.1134/S0869864319020124