Suresh_ECM09_Vianna.pdf (705.41 kB)
Validation of unsteady flamelet / progress variable methodology for non-premixed turbulent partially premixed flames
conference contribution
posted on 2010-01-19, 09:38 authored by S.K. Sadasivuni, Weeratunge MalalasekeraWeeratunge Malalasekera, Salah IbrahimThis paper highlights the modeling capabilities of UFPV approach for the modeling of turbulent partially premixed
lifted flames to capture the extinction and re-ignition phenomena. Large eddy simulation (LES) with the probability
density function (PDF) approach provides the turbulence-chemistry interaction. All scalars are represented as a
function of mean mixture fraction, mixture fraction variance, mean progress variable and scalar dissipation rate.
Mixture fraction is assumed to follow a β-PDF distribution. Progress variable and scalar dissipation rate
distributions are assumed to be a δ-PDF. Results are compared with experimental data of a vitiated co-flow burner
with fuels like CH4/Air and H2/N2. Results of radial plots for temperature, mixture fraction and scattered data of
temperature with mixture fraction at various axial locations are compared. Lift-off height for a CH4/Air flame
appears to be over-predicted while the predicted lift-off height for a H2/N2 flame shows an under-prediction.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
SADASIVUNI, S.K., MALALASEKERA, W. and IBRAHIM, S.S., 2009. Validation of unsteady flamelet / progress variable methodology for non-premixed turbulent partially premixed flames. Proceedings of the ECM 2009 Fourth European Combustion Meeting, 14-17 April 2009,Vienna University of Technology, Vienna, Austria, pp.1-8.Publisher
The Combustion InstituteVersion
- VoR (Version of Record)
Publication date
2009Notes
This conference paper was presented at ECM2009. Papers from this conference are freely available at: http://www.combustion.org.uk/ECM_2009/ECM2009Contents.htmlLanguage
- en