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Modeling of radiation heat transfer in the dense-bed flow of solid pyrolysis in indirectly heated rotary kilns

Tavakkol, Salar ORCID iD icon 1; Zirwes, T. [Beteiligte*r] ORCID iD icon 2,3; Denev, J. A. [Beteiligte*r] 3; Bockhorn, H. [Beteiligte*r] 2; Stapf, D. [Beteiligte*r] 1
1 Institut für Technische Chemie (ITC), Karlsruher Institut für Technologie (KIT)
2 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)
3 Steinbuch Centre for Computing (SCC), Karlsruher Institut für Technologie (KIT)


This work presents the further development and the validation of the Discrete Ordinates Model for thermal radiation which is implemented in OpenFOAM® for application to packed beds of biomass particles. This radiation model is an important part of a more comprehensive model which simulates the thermal conversion of discrete phase (here for instance wet biomass particles) which flows continuously inside an indirectly heated rotary kiln. The comprehensive Eulerian-Lagrangian model integrates three-dimensional, time-resolved simulation of the essential chemical and physical processes occurring within and in-between the moving bed of particles. This is realized by combining the particle collision models for non-reactive dense flows with models for heat transport, phase change and chemical reaction for multiphase reacting flow in the framework of OpenFOAM®.
For the thermal treatment of solid particles, convection and radiation heat transfer methods couple the energy exchange between the reactor wall, gas- and disperse phase. The original implementation of the finite volume Discrete Ordinate Model (fvDOM) valid for a dilute particulate phase neglects the effect of local opacity due to the existence of individual particles. ... mehr

Preprint §
DOI: 10.5445/IR/1000148339
Veröffentlicht am 08.07.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Institut für Technische Chemie (ITC)
Steinbuch Centre for Computing (SCC)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 20.04.2022
Sprache Englisch
Identifikator KITopen-ID: 1000148339
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Weitere HGF-Programme 46.21.01 (POF IV, LK 01) Domain-Specific Simulation & SDLs and Research Groups
Erschienen in Proceedings of the 13th European Conference on Industrial Furnaces and Boilsers (INFUB)
Veranstaltung 13th European Conference on Industrial Furnaces and Boilers (INFUB 2022), Albufeira, Portugal, 19.04.2022 – 22.04.2022
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