Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/1457
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Title: | Influence of the preheating layer characteristics in a two-layer porous burner |
Authors: | Hayashi, Thamy C. Malico, Isabel Pereira, José Carlos F |
Keywords: | Queimadores porosos CFD Estabilidade de chama |
Issue Date: | 2007 |
Abstract: | To assess the influence of the perforated plate that precedes the flame support layer in a newly designed bilayered
porous combustor, a numerical study was conducted by means of a three-dimensional unit cell. The model includes
the Navier-Stokes equations, the gas and solid energy balances and the transport equations for chemical species and
was computationally implemented using the finite volume method. Radiative heat transfer in the solid matrices, local
thermal non-equilibrium and detailed chemistry are accounted for.
Simulations of the burner using perforated plates with holes of different sizes were conducted. It is shown that a
perforated plate with holes of 1 mm in diameter is able to provide the necessary quenching of the reaction front,
leading to the stabilization of the flame within the pores of the flame support layer for all the range of operating
conditions and is, thus, an appropriate choice. The influence of the diameter of the holes on the temperatures attained
by the gas and solid phases, as well as on the emissions of pollutants, namely NO and CO, is discussed. |
URI: | http://hdl.handle.net/10174/1457 |
ISSN: | 1561-4417 |
Type: | article |
Appears in Collections: | FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica CEM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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