Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
THE EFFECT OF THE RADIATIVE PROPERTIES IN POROUS MEDIA COMBUSTION
Submission Author:
Roberto Carlos Moro Filho , PR
Co-Authors:
Roberto Carlos Moro Filho
Presenter: Roberto Carlos Moro Filho
doi://10.26678/ABCM.COBEM2017.COB17-2841
Abstract
The present work examines numerically the effect of thermal radiation in porous burners under local thermal non-equilibrium condition. The radiative transfer equation (RTE) is solved by discrete ordinate method (DOM) in a two-dimensional axisymmetric cylindrical participating media. Emission and absorption by the porous media were taken into consideration and the S12 quadrature was used to solve the RTE. The equations of mass continuity, momentum and energy are written for an elementary representative volume yielding a set of equations valid for the entire computational domain. These equations are discretized using the control volume method and the resulting system of algebraic equations is relaxed with the SIMPLE method. The reactor simulated has two different porous regions with different materials and, therefore, different optical properties. A sensitivity study of the extinction coefficient on the temperatures and species are examined. The results show that the extinction coefficient has a strong influence on the position where the flame stabilizes.
Keywords
Combustion., Porous media, thermal radiation
