Details
| Original language | English |
|---|---|
| Pages | 204 |
| Number of pages | 1 |
| Publication status | Published - 2002 |
| Externally published | Yes |
| Event | 29th International Symposium on Combustion - Sapporo, Japan Duration: 21 Jul 2002 → 26 Jul 2002 |
Conference
| Conference | 29th International Symposium on Combustion |
|---|---|
| Country/Territory | Japan |
| City | Sapporo |
| Period | 21 Jul 2002 → 26 Jul 2002 |
Abstract
The pressure influence on the flow field and combustion process was determined by measuring the characteristics of the turbulence parameters of the velocity field using laser Doppler anemometry, while the chemical reaction was simulated with CHEMKIN. Two measurement series with constant exit velocity and constant mass flow rate were studied by varying the equivalence ratio at increasing pressures. A steady stabilization range, the shape of the bluff-body stabilized flame was primarily determined by the fuel/air ratio with only little effect of the mass flow rate. The enhanced flame propagation at elevated pressures in combination with the reduced viscous damping of shear layer instabilities intensifying the heat transfer to the cold fuel was important, especially for lean flame stabilization. With the definition of a representative folding scale base on the curvature distribution, the flame wrinkles were of the same order of magnitude than Taylor-scaled vortices. As the mixture dependent flame wrinkling could only be reproduced by linear flame theory, flame dynamics was regarded to control the size of the flame front folds over the studied pressure range. Original is an abstract.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
2002. 204 Paper presented at 29th International Symposium on Combustion, Sapporo, Japan.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - The combustion of premixed methane/air at elevated pressures
T2 - 29th International Symposium on Combustion
AU - Soika, Armin
AU - Dinkelacker, Friedrich
AU - Leipertz, Alfred
PY - 2002
Y1 - 2002
N2 - The pressure influence on the flow field and combustion process was determined by measuring the characteristics of the turbulence parameters of the velocity field using laser Doppler anemometry, while the chemical reaction was simulated with CHEMKIN. Two measurement series with constant exit velocity and constant mass flow rate were studied by varying the equivalence ratio at increasing pressures. A steady stabilization range, the shape of the bluff-body stabilized flame was primarily determined by the fuel/air ratio with only little effect of the mass flow rate. The enhanced flame propagation at elevated pressures in combination with the reduced viscous damping of shear layer instabilities intensifying the heat transfer to the cold fuel was important, especially for lean flame stabilization. With the definition of a representative folding scale base on the curvature distribution, the flame wrinkles were of the same order of magnitude than Taylor-scaled vortices. As the mixture dependent flame wrinkling could only be reproduced by linear flame theory, flame dynamics was regarded to control the size of the flame front folds over the studied pressure range. Original is an abstract.
AB - The pressure influence on the flow field and combustion process was determined by measuring the characteristics of the turbulence parameters of the velocity field using laser Doppler anemometry, while the chemical reaction was simulated with CHEMKIN. Two measurement series with constant exit velocity and constant mass flow rate were studied by varying the equivalence ratio at increasing pressures. A steady stabilization range, the shape of the bluff-body stabilized flame was primarily determined by the fuel/air ratio with only little effect of the mass flow rate. The enhanced flame propagation at elevated pressures in combination with the reduced viscous damping of shear layer instabilities intensifying the heat transfer to the cold fuel was important, especially for lean flame stabilization. With the definition of a representative folding scale base on the curvature distribution, the flame wrinkles were of the same order of magnitude than Taylor-scaled vortices. As the mixture dependent flame wrinkling could only be reproduced by linear flame theory, flame dynamics was regarded to control the size of the flame front folds over the studied pressure range. Original is an abstract.
UR - http://www.scopus.com/inward/record.url?scp=0036942380&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:0036942380
SP - 204
Y2 - 21 July 2002 through 26 July 2002
ER -