Experimental study, 1D volume-averaged calculations and 3D direct pore level simulations of the flame stabilization in porous inert media at elevated pressure

Experimental and theoretical study of excess enthalpy flames stabilized in a radial multi-channel as a model cylindrical porous medium burner

“…Since random pores of the cylindrical PM did not permit any visual and intrusive measurements of the submerged flames, detailed flame behaviors could not be identified. Probably for the same reason, the former theoretical and numerical results [5,[20][21][22][23][24][25][26] could not be confirmed by sufficient experimental measurements. This study was motivated by these difficulties.…”

“…Diverging mixture flow, although less of a concern, can provide a different kind of flame stabilization, even in a homogeneous PM [5,[20][21][22][23][24][25][26] . When the mixture velocity is retarded along the flow direction, at least one stationary position may exist in PM.…”

“…For cylindrical twosection PMs, Drobyshevich [25] numerically predicted a five-fold increase in burning rate of interface-stabilized flames, in comparison with a one-body PM. Bedoya et al [26] conducted comprehensive numerical studies on flame temperature and burning velocity affected by flow patterns in PMs. Most of these research works were focused on the effects of flow divergence or heat loss on the flame stabilization, but other effects stemming from the heat recirculation or the flame structure deformation by the gas-solid interaction have not been surveyed in detail.…”

Experimental and Theoretical Study of Combustion under Elevated Pressure within Porous Inert Media

“…Results show that δ is considerably higher in PIM than in the free laminar combustion mode. Indeed, δ increased by a factor of seven, which is also the increase factor reported in the literature for the burning velocity ( S ) in comparison to the laminar‐free mode ( S l ) …”

“…The effective coefficients for the PIM under study were calculated by direct pore level simulations (DPLS) of different phenomena in 3D reproduced foams . Here, τ s =3.85, β =149 m −1 , S v =473 m − , c 1 =370, c 2 =0.38, and c 3 =0.25.…”