Combustion in a Porous Medium-Advances and Applications

Combustion in porous media

“…The mixtures that have been studied have typically been hydrocarbon-air mixtures such as methane-air or propaneair, as the motivation for much of the research has been to improve burner technology. For example, see Trimis and Durst (1996). The main result of the previous work was that of Babkin et al (1991), where five of the six steady combustion regimes in Table 1 were identified.…”

“…dJ!7L is proportional to the characteristic time of chemical conversion, and cP@~2/Kis proportional to the time of thermal relaxation. For flame propagation through a porous material, the critical Peclet number of Pe* = 65 has been found (Trimis and Durst 1996). Thus, Pe 5 Pe* for quenching, and pe > Pe* for flme propagation.…”

Mesoscale, Porous Media Heat Recirculating Combustor

“…PIM combustion research has been reviewed by Howell et al [1996], Viskanta [1995], and Trimis and Durst [1996]. Kotani and Takeno [1982] found that a porous burner increased the laminar flame speed by more than an order of magnitude.…”

Catalyzed Ceramic Burner Material

“…These staged burners consist of a small pore region upstream and a larger pore region downstream. Several researchers have explored the affect of composition, media geometry (packed bed or foams) and porosity on performance (Hsu, 1993;Mathis & Ellzey, 2003;Trimis & Durst, 1996). In these staged porous burners, the interface between the two regions often acts as a means to stabilize the combustion process over a wide range of flow conditions and the small pore region upstream can act as a flashback arrestor.…”