Interaction of Jet Diffusion Flamelets with Grid-generated Co-flow Turbulence

Toshihisa Ueda, Robert K. Cheng

Research output: Contribution to journalArticle

Abstract

The flame front dynamics of a hydrogen jet diffusion flame interacting with co-flow grid-turbulence have been investigated using the laser induced Mie Scattering from Oil Droplets (MSOD) technique. The flame influence on the velocity field was also determined by two-component LDA. The experimental conditions were designed to minimize the generation of shear turbulence between the fuel and air flows. Both single point statistical data and tomographic high speed movies of MSOD were obtained. As shown by the tomographic movies, the flamelets are characterized by wrinkles comparable to the size of the turbulence integral scale. The probability density functions of the single point data show the intermittent nature of the flamelets. The velocity fluctuations, however. were not influenced by the flamelet fluctuation. The shear layer formed between the co-flow and room air is found to have influenced the flamelet dynamics and the velocity fluctuations at positions away from the jet exit.

Original languageEnglish
Pages (from-to)121-135
Number of pages15
JournalCombustion Science and Technology
Volume80
Issue number1-3
DOIs
Publication statusPublished - 1991 Nov 1

Fingerprint

Turbulence
turbulence
grids
Mie scattering
Oils
oils
Scattering
fuel flow
diffusion flames
flame propagation
shear layers
interactions
air flow
Air
probability density functions
Probability density function
rooms
Hydrogen
flames
velocity distribution

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Physics and Astronomy(all)

Cite this

Interaction of Jet Diffusion Flamelets with Grid-generated Co-flow Turbulence. / Ueda, Toshihisa; Cheng, Robert K.

In: Combustion Science and Technology, Vol. 80, No. 1-3, 01.11.1991, p. 121-135.

Research output: Contribution to journalArticle

Ueda, Toshihisa ; Cheng, Robert K. / Interaction of Jet Diffusion Flamelets with Grid-generated Co-flow Turbulence. In: Combustion Science and Technology. 1991 ; Vol. 80, No. 1-3. pp. 121-135.
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