PARALLELS BETWEEN THE REGIMES OF TURBULENT AND FILTRATION
COMBUSTION OF GASES IN INERT POROUS MEDIA
K. V. Dobrego and A. D. Chornyi

UDC 536.46:532.517.4

The parallels between the turbulent and the filtration 
combustion of a gas in an inert medium have been considered. It is 
suggested that in the case where the thermal interaction between the 
gas and the porous medium is absent, elementary processes of mixing, 
chemical reaction, and others, which occur in turbulent and filtration 
combustion, can be characterized by similar dimensionless parameters 
setting up a correspondence between the integral scale of turbulence 
and the size of the pores. The dimensionless parameters have been 
analyzed and the diagram of the Borghi regimes of filtration combustion 
has been constructed. A number of typical cases of filtration combustion 
have been characterized using this diagram. It is shown that the considered 
cases of filtration combustion concern the range of distorted flames 
and distributed reaction zones according to the Borghi classification. 
From this it was assumed that the surface of  filtration combustion 
in the first of the considered regimes is continuous in character. 
The formulas for estimating the rate of gas-phase combustion under 
filtration conditions have been recommended.

Academic Scientific Complex "A. V. Luikov Heat and Mass 
Transfer Institute," National Academy of Sciences of Belarus, Minsk, 
Belarus; email: kdob@itmo.by. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 74, No. 3, pp. 34-40, May-June, 2001. 
Original article submitted May 25, 2000.

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