Suresh_ECM09_Vianna.pdf (705.41 kB)
0/0

Validation of unsteady flamelet / progress variable methodology for non-premixed turbulent partially premixed flames

Download (705.41 kB)
conference contribution
posted on 19.01.2010 by S.K. Sadasivuni, Weeratunge Malalasekera, Salah Ibrahim
This 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 Institute

Version

VoR (Version of Record)

Publication date

2009

Notes

This conference paper was presented at ECM2009. Papers from this conference are freely available at: http://www.combustion.org.uk/ECM_2009/ECM2009Contents.html

Language

en

Exports

Logo branding

Keyword(s)

Exports