Improved Correlation for Blowout of Bluff-body Stabilized Flames (Preprint)

Huelskamp, Bethany; Kiel, Barry; Lynch, Amy; Kostka, Stanislav; Gokulakrishnan, P.; Klassen, Michael S.

doi:10.21236/ada560506

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Cited by 3 publications

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“…In the design of bluff-body combustors, the difficulty stems from the limited range of fuel/oxidizer mixing conditions and flow velocities for stable combustion [2]. With the technology development to ensure reliable and robust designs to meet ever increasing system goals, there is a need to carefully characterize flame stability and to develop the robust design rules and tools to guide the design architecture early in the development process [3].…”

Section: Introductionmentioning

confidence: 99%

Size effect on the flame base locations after V-gutters for premixed flames

Gong

Huang

2015

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Size effect on the flame base locations after V-gutters for premixed flames

Gong

Huang

2015

International Journal of Heat and Mass Transfer

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Experimental study of lean ignition and lean blowout performance improvement using an evaporation flameholder

Cheng

Fan

2016

International Journal of Heat and Mass Transfer

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Analysis of Lift off Height and Blow-Off Mechanism of Turbulent Flame by V-Gutter Bluff Body

Boopathi¹,

Ponnambalam²,

Eugene³

et al. 2015

AMM

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The experimental investigation has been carried out to study the stabilization and blowout mechanisms of turbulent flame stabilized by V-gutter bluff body in a square duct at reactive and non-reactive conditions. V-shaped bluff bodies made of stainless steel having 1.6 mm thicknessare used for stabilization of the flame.Experiments have been conducted at selective velocities of commercially available methane and oxygen with 60 degree V-gutter as flame holder. It is observed that at stoichiometric conditions, the V-gutter is dominated by shear layer stabilized flames. The flame stability is influenced by bluff body dimensions and mass flow rate which play a major role in combustion instabilities mixing of air fuel ratio and blow off. The lift off decreases at higher blockage ratios.A strong recirculation zone is found in this test rig immediately downstream of the V-Gutter which gradually subsides and disappears far downstream.The lift off height is not much affected by the velocity of the fuel-air mixture.

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Improved Correlation for Blowout of Bluff-body Stabilized Flames (Preprint)

Abstract: SAR 18. NUMBER OF PAGES 30 19a. NAME OF RESPONSIBLE PERSON (Monitor) a. REPORT

Cited by 3 publications

References 25 publications

Size effect on the flame base locations after V-gutters for premixed flames

Size effect on the flame base locations after V-gutters for premixed flames

Experimental study of lean ignition and lean blowout performance improvement using an evaporation flameholder

Analysis of Lift off Height and Blow-Off Mechanism of Turbulent Flame by V-Gutter Bluff Body

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