LAPSE:2023.27850
Published Article
LAPSE:2023.27850
A Mathematical Model of Biomass Combustion Physical and Chemical Processes
Florin Popescu, Razvan Mahu, Ion V. Ion, Eugen Rusu
April 11, 2023
The numerical simulation of biomass combustion requires a model that must contain, on one hand, sub-models for biomass conversion to primary products, which involves calculations for heat transfer, biomass decomposition rate, product fractions, chemical composition, and material properties, and on the other hand, sub-models for volatile products transport inside and outside of the biomass particle, their combustion, and the char reduction/oxidation. Creating such a complete mathematical model is particularly challenging; therefore, the present study proposes a versatile alternative—an originally formulated generalized 3D biomass decomposition model designed to be efficiently integrated with existing CFD technology. The biomass decomposition model provides the chemical composition and mixture fractions of volatile products and char at the cell level, while the heat transfer, species transport, and chemical reaction calculations are to be handled by the CFD software. The combustion model has two separate units: the static modeling that produces a macro function returning source/sink terms and local material properties, and the dynamic modeling that tightly couples the first unit output with the CFD environment independently of the initial biomass composition, using main component fractions as initial data. This article introduces the generalized 3D biomass decomposition model formulation and some aspects related to the CFD framework implementation, while the numerical modeling and testing shall be presented in a second article.
Keywords
Biomass, combustion, Computational Fluid Dynamics, mathematical modeling, numerical simulation, thermochemical decomposition
Suggested Citation
Popescu F, Mahu R, Ion IV, Rusu E. A Mathematical Model of Biomass Combustion Physical and Chemical Processes. (2023). LAPSE:2023.27850
Author Affiliations
Popescu F: Faculty of Engineering, “Dunarea de Jos” University of Galati, 800008 Galat, Romania
Mahu R: Faculty of Engineering, “Dunarea de Jos” University of Galati, 800008 Galat, Romania
Ion IV: Faculty of Engineering, “Dunarea de Jos” University of Galati, 800008 Galat, Romania
Rusu E: Faculty of Engineering, “Dunarea de Jos” University of Galati, 800008 Galat, Romania [ORCID]
Journal Name
Energies
Volume
13
Issue
23
Article Number
E6232
Year
2020
Publication Date
2020-11-26
Published Version
ISSN
1996-1073
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Original Submission
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PII: en13236232, Publication Type: Journal Article
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doi:10.3390/en13236232
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Apr 11, 2023
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