Scalar conservation in large eddy simulations of reacting flows

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Large eddy simulation is the most viable approach for the accurate simulation of turbulent reacting flows. With the proper combination of high-order, low-dissipation numerical methods, physics-based subgrid-scale models, and boundary conditions it is becoming possible to simulate many combustion flows at relevant conditions. However, non-premixed flows are a particular challenge because the thickness of the fuel/oxidizer interface scales inversely with Reynolds number. Most numerical methods diffuse the interface, resulting in artificial mixing and spurious reactions. Furthermore, when higher-order numerical methods are used, there are often aphysical undershoots and overshoots in the scalar variables (e.g. species mass fractions or progress variable). In this paper, we attempt to construct a numerical method that mitigates this issue.

Original languageEnglish (US)
Title of host publicationAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102936
DOIs
StatePublished - 2014
EventAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference 2014 - Atlanta, GA, United States
Duration: Jun 16 2014Jun 20 2014

Publication series

NameAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference

Other

OtherAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference 2014
CountryUnited States
CityAtlanta, GA
Period6/16/146/20/14

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