Analytical modeling of counterflow non-premixed organic particles combustion: Thermal radiation effects

Moghadasi, Hesam; Malekian, Navid; Bidabadi, Mehdi; Rasam, Hamed

doi:10.1016/j.fuproc.2018.12.002

Cited by 12 publications

(6 citation statements)

References 20 publications

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“…During the biofuel particles combustion, vaporization rate can be regarded as the mass of the gaseous fuel produced per unit of volume and time. The vaporization rate of the present research is 43,44…”

Section: Particle Porositymentioning

confidence: 83%

ω_{normalv} = \frac{Y_{s}}{τ_{v}} H (T - T_{normalv}),

in which

Y_{s}

τ_{v}

, and

T_{v}

denote the mass fraction of solid fuel, characteristic time of vaporization, and vaporization temperature, respectively. Additionally,

H

stands for the Heaviside function determined as

H (T - T_{normalv}) = true{\begin{matrix} true \\ left 0, & left T < T_{normalv}, \\ left 1, & left T \geq T_{normalv} . \end{matrix}

…”

Section: Analytical Investigationmentioning

confidence: 98%

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Analysis of nonpremixed multiregion laminar flames through biofuel porous particles considering the effect of heat recirculation

et al. 2020

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In this study, a comprehensive analysis is conducted to evaluate the effects of heat recirculation and particle porosity on combustion characteristics of multizone counterflow nonpremixed flames fed with porous biofuel particles. For this purpose, the structure of flame contains preheat, postvaporization, and oxidizer zones. Additionally, Lycopodium is considered as the volatile biofuel, especially due to its appreciable flammability and dispensability. Dimensionalized and nondimensionalized forms of mass and energy conservation equations are scrutinized in each zone. To explore of the thermal recirculation effect, a specific term is included in the energy conservation equation. The variation of several parameters, including flame temperature, particle radius, mass fraction of the gaseous fuel and oxidizer, mass particle content, equivalence ratio, and particle porosity, is studied in this work considering and ignoring the thermal recirculation impact. As a result, increasing heat recirculation coefficient from k = 0 to 1 will rise the flame temperature and shift the flame position to the left side (fuel nozzle). Furthermore, consideration of the thermal heat recirculation will improve the gaseous fuel production in the preheat and postvaporization zones. Additionally, an increase in mass concentration and reduction of particles radius and porosity would lead to a rise in the flame temperature.

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Section: Particle Porositymentioning

confidence: 83%

ω_{normalv} = \frac{Y_{s}}{τ_{v}} H (T - T_{normalv}),

in which

Y_{s}

τ_{v}

, and

T_{v}

denote the mass fraction of solid fuel, characteristic time of vaporization, and vaporization temperature, respectively. Additionally,

H

stands for the Heaviside function determined as

H (T - T_{normalv}) = true{\begin{matrix} true \\ left 0, & left T < T_{normalv}, \\ left 1, & left T \geq T_{normalv} . \end{matrix}

…”

Section: Analytical Investigationmentioning

confidence: 98%

Analysis of nonpremixed multiregion laminar flames through biofuel porous particles considering the effect of heat recirculation

et al. 2020

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“…Kothandapani and Prakash [14] worked out upon the influence of radiation over the peristalsis of magneto hydrodynamics in a channel. Some renowned researchers also worked on thermal radiation [15][16][17][18][19][20][21][22][23]. In these studies, the radiation with nonlinearity was introduced by the researchers with in fluid flow models.…”

Section: Mathematical Problems In Engineeringmentioning

confidence: 99%

Numerical Treatment for Darcy‐Forchheimer Flow of Sisko Nanomaterial with Nonlinear Thermal Radiation by Lobatto IIIA Technique

Uddin

Akhtar

Zhu

et al. 2019

Mathematical Problems in Engineering

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In this study, the competency of numerical computational framework based on Lobatto IIIA technique is utilized for dynamical analysis of the Darcy-Forchheimer flow of Sisko nanomaterial with nonlinear thermal radiation. The resultant PDEs of the Sisko fluid model expressions are transformed into system of nonlinear ODEs by exploiting the similarity variables. Graphical representations and numerical illustrations are used to envisage the characteristics of various physical parameters of interest on velocity profile, nanoparticles concentration, and temperature distribution of Sisko fluidic system. In addition, skin friction and Nusselt number are numerically examined with observation that the material parameter of Sisko fluid increases the velocity profile as well as Nusselt number while decreasing temperature, concentration profiles, and skin friction coefficient.

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“…The protection can be provided by venting and suppression systems. [6][7][8][9][10][11] Considering the increased combustion efficiency and high burning rate of aluminum powder, it has attracted the attentions to be used in several applications. [12][13][14] Recently, combustion of organic and inorganic particles has been studied in some investigations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Flame Propagation Speed in a System of Random Discrete Sources for Spherical Particles in a Three-Dimensional Space

Sadeghi

Moghadasi

Malekian

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Realistic estimation of combustion phenomenon can be achieved by considering a random distribution for the particles instead of uniform distribution. Hence, in this study, theoretical investigation of aluminum particles combustion is studied three dimensionally with the consideration of random dispersion for discrete sources. Moreover, flame propagation speed is predicted through a proposed thermal model in a reaction medium. In addition, it is inferred that the propagation speed of the flame is a function of concentration and diameter of aluminum dust; while the minimum ignition energy is a function of particle diameter and equivalence ratio. A suitable prediction of the model is concluded by comparing the obtained results with the experimental and analytical data.

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Analytical modeling of counterflow non-premixed organic particles combustion: Thermal radiation effects

Cited by 12 publications

References 20 publications

Analysis of nonpremixed multiregion laminar flames through biofuel porous particles considering the effect of heat recirculation

Analysis of nonpremixed multiregion laminar flames through biofuel porous particles considering the effect of heat recirculation

Numerical Treatment for Darcy‐Forchheimer Flow of Sisko Nanomaterial with Nonlinear Thermal Radiation by Lobatto IIIA Technique

Evaluation of Flame Propagation Speed in a System of Random Discrete Sources for Spherical Particles in a Three-Dimensional Space

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