Abstract
This paper reports on numerical investigation of preferential
diffusion effects on flame stabilization of turbulent lifted
flames. The experimental test case is the Delft JHC burner
to study Mild combustion; a clean combustion concept. In
this burner, methane based fuel has been enriched from 0 to
25% of H2 . Since the main stabilization mechanism of these
turbulent flames is autoignition, numerical models should account
for this mechanism. Addition of hydrogen makes modeling
even more challenging due to its preferential diffusion
effects. In this study, first, a novel numerical model is developed
based on the Flamelet Generated Manifolds (FGM)
to account for preferential diffusion effects in autoignition.
Afterwards, the developed FGM approach is implemented in
LES of the H2 enriched turbulent lifted jet flames. Main
features of these turbulent lifted flames such as the formation
of ignition kernels and stabilization mechanisms are analyzed
and compared with measurements of OH chemiluminescence.
| Original language | English |
|---|---|
| Title of host publication | Unknown Host Publication |
| Publication status | Published - 2014 |
| Event | Symposium (Japanese) on Combustion - Okayama, Japan Duration: 3 Dec 2014 → 5 Dec 2014 |
Conference
| Conference | Symposium (Japanese) on Combustion |
|---|---|
| Country/Territory | Japan |
| City | Okayama |
| Period | 3/12/14 → 5/12/14 |
Bibliographical note
The full text is currently unavailable on the repository.Keywords
- Large Eddy Simulation
- Flamelet Generated Manifolds
- preferential diffusion effects
- flame stabilization
- autoignition