Investigation of turbulence–flame interaction using the Schur decomposition

A. Erraiy, R. Boukharfane, Francisco E.Hernández Perez, Hong G. Im, M. Parsani

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


In the framework of turbulence-flame interaction, the flame is characterized by the gradient of a reactive scalar such as the progress variable, whereas the turbulence is represented by the vorticity and the strain rate. Quantitative assessment of this interaction is performed trough the study of the coupled transport between these quantities that are subject to the effects of heat release and chemical reactions. The present analysis aims at improving the understanding of the small scale turbulence – flame interaction properties, through the introduction of an additive decomposition of the strain rate and vorticity fields into their local and non-local components. Such a decomposition presents the advantage of dissociating the local dynamics, which are associated to the eigenvalues, from the asymmetric effects induced by the contribution of the deviatoric part of the pressure Hessian and viscous mechanisms. The respective role of the local and non-local effects is studied for a broad range of Karlovitz numbers, by virtue of direct numerical simulations (DNS) of turbulent, premixed, lean, and statistically planar flames of methane-air.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum 2022
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Print)9781624106316
StatePublished - 2022
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States
Duration: Jan 3 2022Jan 7 2022

Publication series

NameAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022


ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Country/TerritoryUnited States
CitySan Diego

ASJC Scopus subject areas

  • Aerospace Engineering


Dive into the research topics of 'Investigation of turbulence–flame interaction using the Schur decomposition'. Together they form a unique fingerprint.

Cite this