Assessment of FSD and SDR closures for turbulent flames of alternative fuels

Zacharias M. Nikolaou, Nedunchezhian Swaminathan

Research output: Contribution to journalArticle

Abstract

Detailed-chemistry DNS studies are becoming more common due to the advent of more powerful modern computer architectures, and as a result more realistic flames can be simulated. Such flames involve many alternative fuels such as syngas and blast furnace gas, which are usually composed of many species and of varying proportions. In this study, we evaluate whether some of the commonly used models for the scalar dissipation rate and flame surface density can be used to model such flames in the LES context. A priori assessments are conducted using DNS data of multi-component fuel turbulent premixed flames. These flames offer unique challenges because of their complex structure having many distinct consumption layers for the different fuel components unlike in a single-component fuel. Some of the models tested showed good agreement with the DNS data and thus they can be used for the multi-component fuel combustion.
LanguageEnglish
Number of pages16
JournalFlow, Turbulence and Combustion
Early online date28 Mar 2018
DOIs
Publication statusE-pub ahead of print - 28 Mar 2018

Fingerprint

Alternative fuels
Computer architecture
Blast furnaces
Gases

Keywords

  • DNS
  • LES
  • fractal
  • flame surface density
  • scalar dissipation rate
  • alternative fuels

Cite this

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Assessment of FSD and SDR closures for turbulent flames of alternative fuels. / Nikolaou, Zacharias M.; Swaminathan, Nedunchezhian.

In: Flow, Turbulence and Combustion, 28.03.2018.

Research output: Contribution to journalArticle

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