Mathematical analysis of steady-state non-premixed multi-zone combustion of porous biomass particles under counter-flow configuration

Saman Hosseinzadeh, Abolfazl Fattahi, Sadegh Sadeghi, Ebrahim Rahmani, Mehdi Bidabadi, Fatemeh Zarei and Fei Xu

Renewable Energy, 2020, vol. 159, issue C, 705-725

Abstract: In this study, non-premixed multi-zone combustion of porous lycopodium particles in a counter-flow configuration at steady state was modeled using a derived analytical model. To model the porosity, a reasonable series form is considered. In the derived analytical model, both convective and radiative heat losses were included. The overall combustion process was mathematically divided into pre-heating, drying, vaporization, flame, and post-flame zones and lycopodium particles and oxidizer are injected from opposite sides locating infinity away the stagnation plane. The particles are firstly dried and then vaporized in a limitedly finite region to produce a gaseous fuel of special chemical composition. Relevant conservation equations were formulated in both dimensional and dimensionless forms. Applying suitable jump and boundary conditions, the corresponding continuity and energy equations were solved using Mathematica and Matlab software. The derived analytical model was first validated through comparison against literature data and a satisfactory agreement was achieved. Then temperature distribution and mass fractions of fuel and oxidizer along the x direction were presented to describe the combustion characteristics. Finally, a series of parametric studies were conducted to study the effects of key operating conditions.

Keywords: Biomass particles; Non-premixed combustion; Analytical modeling; Counter-flow structure; Flame; Devolatilization process (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:159:y:2020:i:c:p:705-725

DOI: 10.1016/j.renene.2020.05.007

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