Comparison of finite-rate chemistry and flamelet/progress-variable models II: Sandia Flame E

Suo Yang, Xingjian Wang, Vigor Yang, Wenting Sun

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

5 Scopus citations

Abstract

In this study, simulations using both the finite-rate chemistry (FRC)-LES and the flamelet/progress-variable (FPV)-LES approaches are conducted for a piloted partially premixed methane/air flame with high turbulence intensity. The two models have different spatial distributions of both time-averaged quantities and instantaneous flame field. For both axial and radial profiles of time-averaged statistics, the FPV-LES approach provides overall better prediction than FRC-LES, primarily due to the unity effective Lewis number under high turbulence intensity. To properly apply FRC in LES, a better transport model covering a broad range of turbulence intensity is required. In contrast, for conditional statistics, in which the effects of transport modeling are largely removed, the FRC-LES approach provides overall better predictions than FPV-LES for all quantities at most locations and mixture fractions.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Edition210059
ISBN (Print)9781624105241
DOIs
StatePublished - 2018
Externally publishedYes
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018
Number210059

Other

OtherAIAA Aerospace Sciences Meeting, 2018
CountryUnited States
CityKissimmee
Period1/8/181/12/18

Bibliographical note

Funding Information:
This work was funded partly by NASA (Grant NNX15AU96A), and partly by the William R.T. Oakes Endowment of the Georgia Institute of Technology.

Publisher Copyright:
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

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