Statistical analysis of the edge flame propagation in a turbulent lifted flame

Shahram Karami, Mohsen Talei, Evatt R. Hawkes

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


This paper presents a statistical analysis of edge flames in a turbulent lifted flame using direct numerical simulation (DNS). To investigate the dynamics of edge flames, a theoretical framework describing the edge-flame propagation velocity as a function of propagation velocities of mixture fraction and product mass fraction iso-surfaces at the flame base is used. The correlations between these propagation velocities and scalar dissipation rate, orientations and gradients of product mass fraction and mixture fraction are then studied.The analysis reveals that negative edge-flame velocity, which may be interpreted as an extinction, occurs at high scalar dissipation rate. The responses of propagation velocities to scalar dissipation are explained using the correlation of contributing terms, namely the reaction, tangential and normal diffusions terms and using the statistics of alignment between product mass fraction and mixture fraction gradients.
Original languageEnglish
Title of host publicationInternational Symposium on Turbulence and Shear Flow Phenomena (TSFP-9)
EditorsStovros Tavoularis
Place of PublicationMelbourne Vic Australia
PublisherUniversity of Melbourne
Number of pages6
Publication statusPublished - Jul 2015
Externally publishedYes
EventTurbulence and Shear Flow Phenomena 2015 - The University of Melbourne, Melbourne, Australia
Duration: 30 Jun 20153 Jul 2015
Conference number: 9th


ConferenceTurbulence and Shear Flow Phenomena 2015
Abbreviated titleTSFP-9
Internet address

Cite this