Characteristics of flamelet in spray flames (1st report, general feature and effects of strain rate)

Hiroaki Watanabe, Ryoichi Kurose, Seung Min Hwang, Fumiteru Akamatsu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Characteristics of flamelet in spray flames in a laminar counterflow are investigated by a two-dimensional DNS in terms of mixture fraction and scalar dissipation rate. The motion of spray droplets is calculated by the Lagrangian method without parcel model. The results show that large difference in the trends of temperature and mass fractions of chemical species in mixture fraction space between the spray flame and gaseous diffusion flame is observed. Especially the temperature in the spray flame is much higher than that in the gaseous diffusion flame. This is considered due to much lower scalar dissipation rate and co-existence of premixed and diffusion combustion in the spray flame. It is also revealed that for the spray flame, temperature and mass fractions of chemical species cannot be clearly identified by the mixture fraction and the scalar dissipation rate by themselves. The behavior becomes marked in lower strain rate conditions.

Original languageEnglish
Pages (from-to)2056-2063
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume72
Issue number8
Publication statusPublished - Aug 2006
Externally publishedYes

Fingerprint

strain rate
sprayers
Strain rate
flames
diffusion flames
dissipation
gaseous diffusion
scalars
Temperature
flame temperature
counterflow
trends
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Characteristics of flamelet in spray flames (1st report, general feature and effects of strain rate). / Watanabe, Hiroaki; Kurose, Ryoichi; Hwang, Seung Min; Akamatsu, Fumiteru.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 72, No. 8, 08.2006, p. 2056-2063.

Research output: Contribution to journalArticle

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