Journal
COMBUSTION THEORY AND MODELLING
Volume 21, Issue 1, Pages 35-48Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13647830.2016.1213426
Keywords
population balance equation; soot formation; laminar diffusion flames; particle size distribution; CFD
Categories
Funding
- Engineering and Physical Sciences Research Council (EPSRC)
- Royal Society
- Engineering and Physical Sciences Research Council [EP/K025163/1, EP/K026801/1, EP/G05679X/1, EP/C518101/1, 1124894] Funding Source: researchfish
- EPSRC [EP/K026801/1, EP/G05679X/1, EP/K025163/1] Funding Source: UKRI
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A discretised population balance equation (PBE) is coupled with an in-house computational fluid dynamics (CFD) code in order to model soot formation in laminar diffusion flames. The unsteady Navier-Stokes, species and enthalpy transport equations and the spatially-distributed discretised PBE for the soot particles are solved in a coupled manner, together with comprehensive gas-phase chemistry and an optically thin radiation model, thus yielding the complete particle size distribution of the soot particles. Nucleation, surface growth and oxidation are incorporated into the PBE using an acetylene-based soot model. The potential of the proposed methodology is investigated by comparing with experimental results from the Santoro jet burner [Santoro, Semerjian and Dobbins, Soot particle measurements in diffusion flames, Combustion and Flame, Vol. 51 (1983), pp. 203-218; Santoro, Yeh, Horvath and Semerjian, The transport and growth of soot particles in laminar diffusion flames, Combustion Science and Technology, Vol. 53 (1987), pp. 89-115] for three laminar axisymmetric non-premixed ethylene flames: a non-smoking, an incipient smoking and a smoking flame. Overall, good agreement is observed between the numerical and the experimental results.
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