A Study on Concentration Field of Unsteady Gaseous Fuel Jet (Axisymmetric Turbulent Free Methane Jet)

Eiji Tomita, Yoshisuke Hamamoto, Felix Chintu Nsunge, Yoshinori Tsunashima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Fuel gas injection is used for gas diesel engines. It is very important to investigate the behaviour of the unsteady jet. In this study, the concentration field of a suddenly started cold methane gas jet into still air was nonintrusively measured by the infrared absorption method with a 3.39 μm He-Ne laser. Furthermome, the equations of mass, momentum, energy, species (methane and air) and the k-ε turbulence model were solved numerically. The concentration field was obtained and compared with the experimental results. As a result, it was found that the global trends of the jet, that is to say, penetration and averaged concentration, are predicted well, though the unsteady concentration near the jet axis is not predicted because the turbulence model is based on the time-averaged one.

Original languageEnglish
Pages (from-to)2126-2131
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume58
Issue number551
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

gaseous fuels
Jet fuel
Methane
methane
turbulence models
Turbulence models
fuel injection
gas injection
Gas engines
gas jets
diesel engines
Gas fuels
air
Infrared absorption
Air
infrared absorption
Diesel engines
Momentum
penetration
kinetic energy

Keywords

  • Concentration
  • Fuel Injection
  • Gaseous Fuel
  • Infrared Absorption Method
  • Jet
  • k-ε Model
  • Laser
  • Methane
  • Numerical Analysis
  • Unsteady Flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

A Study on Concentration Field of Unsteady Gaseous Fuel Jet (Axisymmetric Turbulent Free Methane Jet). / Tomita, Eiji; Hamamoto, Yoshisuke; Nsunge, Felix Chintu; Tsunashima, Yoshinori.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 58, No. 551, 1992, p. 2126-2131.

Research output: Contribution to journalArticle

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