Name: ARTUR GUIMARÃES MAIOLI
Publication date: 30/09/2016
Advisor:
Name |
Role |
|---|---|
| MARCIO FERREIRA MARTINS | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| MARCIO FERREIRA MARTINS | Advisor * |
Summary: Smoldering combustion is a slow, flame-free form of combustion that occurs at relatively low temperatures. It is sustained by the heat released in heterogeneous reactions arising from the direct attack of oxygen on the surface of solid fuels. Despite the relatively low characteristics of this type of combustion, it presents a significant danger. This work aimed to evaluate the smoldering combustion of bituminous shale in a combustion cell. In order to do this, we used the free simulation software OpenFOAM, with the biomassGasificationFoam solver, destined to the processes of thermochemical conversion of solid fuels in fixed bed. The results were compared with experimental data from the literature. The simulated temperature profiles showed good agreement with the experiments, and it was possible to confirm the reaction leading combustion structure, WHERE the reaction zone advances faster than the heat transfer zone. It was also evaluated the importance of the oxygen supply in the propagation velocity of the flame front, confirming that this parameter governs this velocity. Finally, a parametric study was carried out to evaluate the influence of physical parameters on the evolution of bed temperature and flame propagation velocity.
