Local reaction zone thickness of a high intensity turbulent premixed flame

Furukawa, Junichi; Harada, Eiichi; Hirano, Toshisuke

doi:10.1016/s0082-0784(06)80331-0

Cited by 16 publications

(9 citation statements)

References 8 publications

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“…al. [8] using intense turbulent jet flames, varied the relative velocity between the fueVair jet and the co-flow to attain high turbulence levels and the analysis was based on the probability density functions (pdf) of ion-probe currents. They concluded that their low Damkohler number flames exhibit flamelet-like behavior.…”

Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

“…al. [8], the flames were subjected to shear type turbulence. The main challenge in experimental work to verify the Klimov-Williams criterion is in generating and sustaining intense turbulence in the approach flow.…”

Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

“…Turbulence generated by a grid or a perforated plate is not very intense and dissipates quickly. The alternative, shear turbulence [8,9], may not be appropriate for this purpose because the scaling laws are different from those of isotropic turbulence. This leads to inconsistencies when mapping the initial conditions of the shear turbulence experiments onto the phase diagrams.…”

Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

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Experimental study of premixed flames in intense isotropic turbulence1, 2

Bédat

1995

Combustion and Flame

133

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Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

Section: Lawrence Berkeley Laboratorymentioning

confidence: 99%

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Experimental study of premixed flames in intense isotropic turbulence1, 2

Bédat

1995

Combustion and Flame

133

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“…Each ion current fluctuation indicates that the local reaction zone passes the microelectrostatic probe (Furukawa et al, 1990). The radius of the local reaction zone curvature can be inferred by analyzing a pair of ion current fluctuations as follows:…”

Section: Estimation Of the Local Reaction Zone Configurationmentioning

confidence: 99%

Translated from Nensho no Kagaku to Gijutsu, 1, 51-57 (1992) Electrostatic Probe Measurement to Explore Local Configuration of a High Intensity Turbulent Premixed Flame

Furukawa¹,

Nakamura

Hirano

1994

Combustion Science and Technology

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The present study has been performed to explore the detailed configuration of the local reaction zone of a high intensity turbulent premixed flame by using a micro-electrostatic probe of two identical sensors. The local reaction zone configuration is shown to be determined by analyzing the ion current fluctuations. The radius of the local reaction zone curvature convex toward the unburned mixture is larger than that convex toward the burned gas. The radii of the local reaction zone curvature convex toward unburned mixture are distributed over a wider range than those convex toward burned gas. The frequency of the larger radius of the local reaction zone curvature increases in the downstream region. Therefore, the mean radius of the local reaction zone curvature in the downstream region is larger than that in the upstream region.

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“…According to the hypothesis of Damkö hler [7], the mass transportation is dominated by microscale eddies in the reaction zone. The recent experimental works [8][9][10][11], however, indicated that the microscale eddies dissipated at the preheat zone, and hardly affect the reaction zone structure but widen the preheat zone of the flame. Peters [12] examined those results and suggested a refined regime diagram for premixed turbulent combustion.…”

Section: Introductionmentioning

confidence: 99%