Study on factors affecting shape characteristics of spherically propagating i-C8H18/O2/N2 turbulent flames using constant volume vessel

Yukihide Nagano, Akihiro Tsuda, Akira Noomo, Takuya Fukushima, Masayoshi Morita, Toshiaki Kitagawa

Research output: Contribution to conferencePaper

Abstract

Combustion enhancement is necessary for the improvement of thermal efficiency of spark ignition engines operated under lean and high EGR rate conditions. It is important to understand the interaction of turbulence and flame in order to enhance the combustion by the turbulence. The flame front area is considered to be one of the most dominant factor for turbulent burning velocity. The shape of turbulent flame can be characterized by fractal characteristics and the flame front area can be estimated using fractal characteristics. In this study, turbulent iso-octane/O2/N2 flames were investigated under N2 diluted conditions and elevated pressure conditions using a constant volume vessel. The shape characteristics of spherically propagating premixed turbulent iso-octane/O2/N2 flames were evaluated by fractal analysis. Influences of turbulent properties and flame properties on fractal characteristics, such as fractal dimension and inner-cutoff scale were investigated.

Original languageEnglish
Publication statusPublished - Jan 1 2017
Event9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017 - Okayama, Japan
Duration: Jul 25 2017Jul 28 2017

Other

Other9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017
CountryJapan
CityOkayama
Period7/25/177/28/17

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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    Nagano, Y., Tsuda, A., Noomo, A., Fukushima, T., Morita, M., & Kitagawa, T. (2017). Study on factors affecting shape characteristics of spherically propagating i-C8H18/O2/N2 turbulent flames using constant volume vessel. Paper presented at 9th International Conference on Modeling and Diagnostics for Advanved Engine Systems, COMODIA 2017, Okayama, Japan.