Details
| Original language | English |
|---|---|
| Pages (from-to) | 481-502 |
| Number of pages | 22 |
| Journal | Zeitschrift fur Physikalische Chemie |
| Volume | 223 |
| Issue number | 4-5 |
| Publication status | Published - 25 Sept 2009 |
| Externally published | Yes |
Abstract
The interaction of turbulent flow and chemical processes is complex. Due to the strong turbulent fluctuations on very small scales, a direct insight into the processes has not been possible for long time. New laser diagnostics with sufficient spatial and temporal resolution allow now the answer to long discussed questions, for instance concerning the contradictory ideas of thin or thickened flame fronts in turbulent premixed combustion. More and more also numerical models allow the combined calculation of the local processes describing turbulent flow and combustion reaction. However, often unknown terms coming from the averaging procedure of the turbulence models need to have closures. Advanced application of the planar PIV measurement technique allowed the velocity field evaluation conditioned to the either unburnt or burnt gas state in turbulent premixed flames. Herewith, the direct evaluation of unclosed model terms has been possible for both RANS models as well as for models for the large-eddy simulation method. The mutual interaction of advanced laser diagnostics and numerical models is seen as one of the milestones for the development of advanced technical combustion.
Keywords
- Combustion, Laser diagnostics, Premixed flames, Turbulent flow
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Zeitschrift fur Physikalische Chemie, Vol. 223, No. 4-5, 25.09.2009, p. 481-502.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Laser Diagnostics for the Model Development in Turbulent Premixed Flames
AU - Dinkelacker, Friedrich
AU - Pfadler, Sebastian
AU - Leipertz, Alfred
N1 - Funding information: The described work has been done together with several coworkers, which we want to acknowledge: M. Schäfer, A. Buschmann, J. Wolfrum, D. Hofmann, A. Soika, D. Most, V. Höller, M. Löffler, F. Beyrau, J. Kerl, J. Scheuerlein. The authors also gratefully acknowledge funding of parts of this work by the Arbeits-gemeinschaft TECFLAM, the Bavarian Forschungsverbund turbulente Verbren-nung (FORTVER), the German National Science Foundation (DFG) and the Erlangen Graduate School in Advanced Optical Technologies (SAOT).
PY - 2009/9/25
Y1 - 2009/9/25
N2 - The interaction of turbulent flow and chemical processes is complex. Due to the strong turbulent fluctuations on very small scales, a direct insight into the processes has not been possible for long time. New laser diagnostics with sufficient spatial and temporal resolution allow now the answer to long discussed questions, for instance concerning the contradictory ideas of thin or thickened flame fronts in turbulent premixed combustion. More and more also numerical models allow the combined calculation of the local processes describing turbulent flow and combustion reaction. However, often unknown terms coming from the averaging procedure of the turbulence models need to have closures. Advanced application of the planar PIV measurement technique allowed the velocity field evaluation conditioned to the either unburnt or burnt gas state in turbulent premixed flames. Herewith, the direct evaluation of unclosed model terms has been possible for both RANS models as well as for models for the large-eddy simulation method. The mutual interaction of advanced laser diagnostics and numerical models is seen as one of the milestones for the development of advanced technical combustion.
AB - The interaction of turbulent flow and chemical processes is complex. Due to the strong turbulent fluctuations on very small scales, a direct insight into the processes has not been possible for long time. New laser diagnostics with sufficient spatial and temporal resolution allow now the answer to long discussed questions, for instance concerning the contradictory ideas of thin or thickened flame fronts in turbulent premixed combustion. More and more also numerical models allow the combined calculation of the local processes describing turbulent flow and combustion reaction. However, often unknown terms coming from the averaging procedure of the turbulence models need to have closures. Advanced application of the planar PIV measurement technique allowed the velocity field evaluation conditioned to the either unburnt or burnt gas state in turbulent premixed flames. Herewith, the direct evaluation of unclosed model terms has been possible for both RANS models as well as for models for the large-eddy simulation method. The mutual interaction of advanced laser diagnostics and numerical models is seen as one of the milestones for the development of advanced technical combustion.
KW - Combustion
KW - Laser diagnostics
KW - Premixed flames
KW - Turbulent flow
UR - http://www.scopus.com/inward/record.url?scp=68849100581&partnerID=8YFLogxK
U2 - 10.1524/zpch.2009.6041
DO - 10.1524/zpch.2009.6041
M3 - Article
AN - SCOPUS:68849100581
VL - 223
SP - 481
EP - 502
JO - Zeitschrift fur Physikalische Chemie
JF - Zeitschrift fur Physikalische Chemie
SN - 0942-9352
IS - 4-5
ER -