Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Journal of Porous Media
Factor de Impacto: 1.752 Factor de Impacto de 5 años: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508

Volumes:
Volumen 23, 2020 Volumen 22, 2019 Volumen 21, 2018 Volumen 20, 2017 Volumen 19, 2016 Volumen 18, 2015 Volumen 17, 2014 Volumen 16, 2013 Volumen 15, 2012 Volumen 14, 2011 Volumen 13, 2010 Volumen 12, 2009 Volumen 11, 2008 Volumen 10, 2007 Volumen 9, 2006 Volumen 8, 2005 Volumen 7, 2004 Volumen 6, 2003 Volumen 5, 2002 Volumen 4, 2001 Volumen 3, 2000 Volumen 2, 1999 Volumen 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v14.i4.40
pages 317-327

NUMERICAL MODELING OF TWO-DIMENSIONAL CYLINDRICAL POROUS RADIANT BURNERS WITH SIDEWALL HEAT LOSSES

Mehdi Maerefat
Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran
M. Khosravy el-Hossaini
Energy Research Centre, Research Institute of Petroleum Industry, P.O. Box 14665-137, Tehran, Iran
K. Mazaheri
Department of Mechanical Engineering, Tarbiat Modares University, Iran

SINOPSIS

In this paper, numerical modeling of axisymmetric cylindrical porous radiant burners with sidewall heat loss has been studied. Nonlocal thermal equilibrium is assumed between gas and solid phases and the solid phase is considered as the thermal radiation medium in this modeling. Lateral heat loss at the experimental conditions is found to be 6% of the supplied fuel energy, which causes the highly two-dimensional characteristics and lower temperature profiles in the burner. The experienced maximum peak temperature reduction is about 150 K compared to a one-dimensional flame. The lower flame peak temperature leads to less NOX formation, which results in about 44% reduction of NO concentration at the burner outlet surface for a stoichiometric mixture. This brings about the new results very close to the experimental results. As lateral heat loss increases, the flame front moves downstream. About 6 mm of backward movement is observed when the lateral heat loss is about 23% of the firing rate. This is due to the lower flame speed at lower flame temperature. The new findings are observed for both stoichiometric as well as lean mixtures.


Articles with similar content:

NUMERICAL STUDY ON TURBULENCE EFFECTS IN POROUS BURNERS
Journal of Porous Media, Vol.17, 2014, issue 2
M. K. El-Hossaini, Majid E. Nimvari, Mehdi Maerefat, Nima F. Jouybari
Effects of equivalence ratio on combustion in an oscillating-flow porous burner
International Heat Transfer Conference 12, Vol.26, 2002, issue
W. S. Law, Christopher Y. H. Chao, Yong Huang, Ping Cheng
Combustion characteristics of coaxial non-premixed flames of Natural Gas and Biogas
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019), Vol.0, 2019, issue
Dhananjay Singh Yadav, Bireswar Paul
Transient Flow and Thermal Performance of Integrated Deflector under Periodic Supersonic Flame Impingement
International Heat Transfer Conference 15, Vol.25, 2014, issue
Zhiguo Qu, RuiPeng Fu, Ya-Ling He, JiaJie Zhang
THE EFFECT OF INLET CONDITION ON THE COMBUSTION IN A POROUS–FREE FLAME BURNER
Journal of Porous Media, Vol.20, 2017, issue 9
Seyed Abdolmehdi Hashemi, Majid Nikfar