Assessing the Role of Particles in Radiative Heat Transfer during Oxy-Combustion of Coal and Biomass Blends
Joint Authors
Krishnamoorthy, Gautham
Wolf, Caitlyn
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-19
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
This study assesses the required fidelities in modeling particle radiative properties and particle size distributions (PSDs) of combusting particles in Computational Fluid Dynamics (CFD) investigations of radiative heat transfer during oxy-combustion of coal and biomass blends.
Simulations of air and oxy-combustion of coal/biomass blends in a 0.5 MW combustion test facility were carried out and compared against recent measurements of incident radiative fluxes.
The prediction variations to the combusting particle radiative properties, particle swelling during devolatilization, scattering phase function, biomass devolatilization models, and the resolution (diameter intervals) employed in the fuel PSD were assessed.
While the wall incident radiative flux predictions compared reasonably well with the experimental measurements, accounting for the variations in the fuel, char and ash radiative properties were deemed to be important as they strongly influenced the incident radiative fluxes and the temperature predictions in these strongly radiating flames.
In addition, particle swelling and the diameter intervals also influenced the incident radiative fluxes primarily by impacting the particle extinction coefficients.
This study highlights the necessity for careful selection of particle radiative property, and diameter interval parameters and the need for fuel fragmentation models to adequately predict the fly ash PSD in CFD simulations of coal/biomass combustion.
American Psychological Association (APA)
Krishnamoorthy, Gautham& Wolf, Caitlyn. 2015. Assessing the Role of Particles in Radiative Heat Transfer during Oxy-Combustion of Coal and Biomass Blends. Journal of Combustion،Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1067288
Modern Language Association (MLA)
Krishnamoorthy, Gautham& Wolf, Caitlyn. Assessing the Role of Particles in Radiative Heat Transfer during Oxy-Combustion of Coal and Biomass Blends. Journal of Combustion No. 2015 (2015), pp.1-15.
https://search.emarefa.net/detail/BIM-1067288
American Medical Association (AMA)
Krishnamoorthy, Gautham& Wolf, Caitlyn. Assessing the Role of Particles in Radiative Heat Transfer during Oxy-Combustion of Coal and Biomass Blends. Journal of Combustion. 2015. Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1067288
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067288