Time-averaged modeling of CFB combustion processes

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

CFD modeling is commonly used in furnace design, e.g. for pulverized coal boilers. There the gas flow can be simulated with a steady-state model and the fuel particles by tracking their paths. For CFBs this type of Eulerian-Lagrangian approach is not feasible. Instead, it is possible to apply an Eulerian-Eulerian steady-state two-fluid model combined with Lagrangian particle tracking for the fuel. The present paper concerns the steady-state CFD modeling of CFBs based on this approach, with emphasis on how furnace size affects the closure of the balance equations. The effects of the furnace dimensions on the flow patterns and equation closures are shown to be significant.
Original languageEnglish
Title of host publicationProceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012
Place of PublicationGliwice, Poland
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
Event3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012 - Gliwice, Poland
Duration: 18 Sep 201220 Sep 2012

Conference

Conference3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012
Abbreviated titleCPOTE 2012
CountryPoland
CityGliwice
Period18/09/1220/09/12

Fingerprint

Furnaces
Computational fluid dynamics
Flow patterns
Flow of gases
Boilers
Coal
Fluids

Keywords

  • CFD modeling
  • steady state
  • circulating fluidized bed

Cite this

Kallio, S., Peltola, J., & Taivassalo, V. (2012). Time-averaged modeling of CFB combustion processes. In Proceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012 [179] Gliwice, Poland.
Kallio, Sirpa ; Peltola, Juho ; Taivassalo, Veikko. / Time-averaged modeling of CFB combustion processes. Proceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012. Gliwice, Poland, 2012.
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title = "Time-averaged modeling of CFB combustion processes",
abstract = "CFD modeling is commonly used in furnace design, e.g. for pulverized coal boilers. There the gas flow can be simulated with a steady-state model and the fuel particles by tracking their paths. For CFBs this type of Eulerian-Lagrangian approach is not feasible. Instead, it is possible to apply an Eulerian-Eulerian steady-state two-fluid model combined with Lagrangian particle tracking for the fuel. The present paper concerns the steady-state CFD modeling of CFBs based on this approach, with emphasis on how furnace size affects the closure of the balance equations. The effects of the furnace dimensions on the flow patterns and equation closures are shown to be significant.",
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Kallio, S, Peltola, J & Taivassalo, V 2012, Time-averaged modeling of CFB combustion processes. in Proceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012., 179, Gliwice, Poland, 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012, Gliwice, Poland, 18/09/12.

Time-averaged modeling of CFB combustion processes. / Kallio, Sirpa; Peltola, Juho; Taivassalo, Veikko.

Proceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012. Gliwice, Poland, 2012. 179.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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N2 - CFD modeling is commonly used in furnace design, e.g. for pulverized coal boilers. There the gas flow can be simulated with a steady-state model and the fuel particles by tracking their paths. For CFBs this type of Eulerian-Lagrangian approach is not feasible. Instead, it is possible to apply an Eulerian-Eulerian steady-state two-fluid model combined with Lagrangian particle tracking for the fuel. The present paper concerns the steady-state CFD modeling of CFBs based on this approach, with emphasis on how furnace size affects the closure of the balance equations. The effects of the furnace dimensions on the flow patterns and equation closures are shown to be significant.

AB - CFD modeling is commonly used in furnace design, e.g. for pulverized coal boilers. There the gas flow can be simulated with a steady-state model and the fuel particles by tracking their paths. For CFBs this type of Eulerian-Lagrangian approach is not feasible. Instead, it is possible to apply an Eulerian-Eulerian steady-state two-fluid model combined with Lagrangian particle tracking for the fuel. The present paper concerns the steady-state CFD modeling of CFBs based on this approach, with emphasis on how furnace size affects the closure of the balance equations. The effects of the furnace dimensions on the flow patterns and equation closures are shown to be significant.

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Kallio S, Peltola J, Taivassalo V. Time-averaged modeling of CFB combustion processes. In Proceedings of 3rd International Conference on Contemporary Problems of Thermal Engineering, CPOTE 2012. Gliwice, Poland. 2012. 179