Journal of Engineering Physics and Thermophysics
is a translation of Inzhenerno-fizicheskii Zhurnal,
a publication of the  Academic Scientific Complex 
	"A. V. Luikov Heat and Mass Transfer Institute"
of the National Academy of Sciences of Belarus
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the Publisher
EFFECT  OF  THE  TRANSPARENCY OF THE SKELETON ON PARAMETERS 
OF AN AXISYMMETRIC CYLINDRICAL FILTRATION COMBUSTION HEATER 
K. V. Dobrego and S. A. Zhdanok
UDC 536.46
Numerical simulation with a differential approximation of radiation 
transfer  was   carried  out  to  study  the  effect of the partial 
transparency of the porous skeleton on the radiant efficiency,  the 
maximum  temperature,  and the localization of the combustion front 
in an cylindrical axisymmetric  filtration combustion heater. It is 
shown that the partial transparency  of amorphous quartz grains for 
radiation  provides  a  2-5% increase in the radiant efficiency  in 
comparison  with  nontransparent  materials  under  the   simulated 
conditions.  It  is shown that use of transparent fillings can both 
decrease and  increase  the  skeleton temperature, depending on the 
size of the system and other parameters. Optical characteristics of 
porous  fillings  and  models  of  radiation  transfer in isotropic 
porous media are discussed.
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