Surface-stabilized combustion burners or surface-radiant use perforated ceramic plates, foams, metal fibers to stabilize a premixed flame. These are the most straightforward alternative have both, benefits of reactant preheating technique and great amount heat transferred by radiation from burner load. However, in its design, one greatest difficulties is predict flame stability limits; especial...

Early stage oxidation behavior of SiSiC cellular lattices with different cell types was studied at 1400 °C in two different environments: a porous burner and an electric furnace with stagnant air. Oxidation and silicon alloy bead formation were observed and identified as the most important factors affecting the integrity of the structures. Lowmelting temperature silicon-based alloys formed from...

An open question in the study of quasiconvex function is the characterization of the class of functions which are sum of quasiconvex functions. In this paper we restrict attention to quasiconvex radiant functions, i.e. those whose level sets are radiant as well as convex and deal with the claim that a function can be expressed as the sum of quasiconvex radiant functions if and only if it is rad...

The characteristics of the combustion temperature, flow velocity, CO distribution and NOx emissions of a 10 MW gas burner at different primary to secondary air ratios are numerically studied using computational fluid dynamics software Fluent. The results indicate that the primary to secondary air ratio in gas burner determines the combustion quality through influencing some parameters directly,...

Purpose of this study is to numerically investigate combustion within a porous channel, which has three layers with different pore densities. Non-premixed inside the channel modelled thermal non-equilibrium energy equations. Flow and chemistry are decoupled tabulated using flamelets, thereby reducing computational cost. GRI 3.0 mechanism used account for methane/air combustion. Simulations perf...

The advantages in performance and emissions from combustion within the voids of a porous material, as compared to those conventional open-flame combustion, have motivated numerous studies understand harness connection between underlying structure topology desired system-level properties. current study examines feasibility additively manufactured complex ceramic structures with geometric functio...

Purpose of this study is to numerically investigate combustion within a porous channel, which has three layers with different pore densities. Non-premixed inside the channel modelled thermal non-equilibrium energy equations. Flow and chemistry are decoupled tabulated using flamelets, thereby reducing computational cost. GRI 3.0 mechanism used account for methane/air combustion. Simulations perf...

The transient preheating process of a regenerative oxidation bed placed in a coal mine methane thermal reverse-flow reactor is numerically investigated in this paper. The regenerative oxidation bed is heated by the burned gas which is generated from a burner and is distributed through manifolds, which is modeled in a three-dimensional, unsteady state and laminar flow system, and is assumed as a...