Numerical study of the effects of material properties on flame stabilization in a porous burner

Barra, Amanda J; Diepvens, Guillaume; Ellzey, Janet L.; Henneke, Michael

doi:10.1016/s0010-2180(03)00125-1

Cited by 158 publications

(64 citation statements)

References 22 publications

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“…At bead diameters above 9 mm, a flame could be sustained. (Barra, 2003) modeled a two stage system and determined that low thermal conductivity in the upstream (small pore size) material resulted in the largest stable operating range.…”

Section: De-ee0003491 Catalyzed Ceramic Burner Materials Final Technicmentioning

confidence: 99%

Catalyzed Ceramic Burner Material

Barnes¹

2012

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Section: De-ee0003491 Catalyzed Ceramic Burner Materials Final Technicmentioning

confidence: 99%

Catalyzed Ceramic Burner Material

Barnes¹

2012

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“…Este aumento en la velocidad de deflagración puede afectar la estabilidad de combustión posibilitando el desprendimiento de la llama, por lo cual dependiendo del sistema de combustión deben ser tenidas en cuenta diferentes técnicas de estabilización de la llama. adapTado de (barra, 2003) del gas, del sólido y el calor liberado en el quemador poroso (Barra, 2003), en la interface es donde se estabiliza la llama y como puede observarse se obtiene una temperatura de precalentamiento de la mezcla cercana a 1200 K. En este caso el software permitió analizar diferentes porosidades y propiedades del material encontrando los límites de estabilización de la llama para diferentes factores de aireación y las velocidades óptimas de combustión.…”

Section: Modelado Y Simulación De La Combustiónunclassified

Combustión con exceso de entalpía

Copete-López

2008

TecnoL.

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ResumenEn este trabajo se realiza una revisión del tema relacionado con las características de la combustión utilizando aire normal altamente precalentado. La tecnología se ha utilizado en los últi-mos años para proporcionar un aumento en la eficiencia térmica y una disminución significativa en el consumo de combustible y emisiones contaminantes respecto a los sistemas de combustión convencionales. Se presenta el concepto de combustión con exceso de entalpía, las principales propiedades de combustión que se afectan por el precalentamiento de los reactivos, los sistemas más utilizados para precalentar el aire, las ventajas y desventajas de esta tecnología y se describen algunas técnicas computacionales empleadas para el estudio de este tipo de combustión. Palabras claveExceso de entalpía, aire precalentado, recuperación de calor. AbstractThis work is a review of the characteristics of the combustion using highly preheated normal air. The technology has been used in the last years to provide an increase in the thermal efficiency and a significant decrease in the consumption of fuel and polluting emissions regarding the conventional combustion systems.

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“…They studied the effects of these models on temperature, chemical species concentrations, burning rate and pollutant emissions. Bara et al [4] presented the results of a one-dimensional mathematical model on the flame stabilization in a two section porous burner. They performed a parametric study in which the properties of two sections are varied independently.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Combustion Parameters on Pollutant Emissions in a Porous Burner

Khiavi

2014

International Journal of Spray and Combustion Dynamics

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This paper reports a two-dimensional numerical prediction of premixed methane/air combustion in inert porous media. The two dimensional Navier-stokes equations, the two separate energy equations for solid and gas and conservation equations for chemical species are solved using finite volume method based on SIMPLE algorithm. The burner under study is a rectangular one with two different regions. First region is a preheating zone (low porosity matrix) that followed by the actual combustion region (high porosity matrix). For simulating the chemical reactions, skeletal mechanism (26 species and 77 reactions) is used. For studying the pollutant emissions in this porous burner, the effects of porous matrix properties, excess air ratio and inlet velocity are studied. The predicted gas temperature contour and pollutant formations are in good agreement with the available experimental data. The results indicate that the downstream of the burner should be constructed from materials with high conductivity, high convective heat transfer coefficient and high porosity in order to decrease the CO and NO emissions. Also, with increasing the inlet velocity of gas mixture and the excess air ratio, the pollutant emissions are decreased.

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Numerical study of the effects of material properties on flame stabilization in a porous burner

Cited by 158 publications

References 22 publications

Catalyzed Ceramic Burner Material

Catalyzed Ceramic Burner Material

Combustión con exceso de entalpía

The Effects of Combustion Parameters on Pollutant Emissions in a Porous Burner

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