Temperature and species measurement in a quenching boundary layer on a flat-flame burner

Fuyuto, Takayuki; Kronemayer, Helmut; Lewerich, Burkhard; Brübach, J.; Fujikawa, Taketoshi; Akihama, Kazuhiro; Dreier, Thomas; Schulz, Christof

doi:10.1007/s00348-010-0917-x

Cited by 34 publications

(10 citation statements)

References 27 publications

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“…In the most studies which applied the laser diagnostics methods, the methane/air premixed flames were chosen as the fundamental flame because it had the simple chemical mechanism and less soot formation [92][93][94][95][96][97][98][99]102,103 which might interfere the measurements of laser devices. Several researchers also adopted some other complex gas fuels in the 91 methane/air premixed flames, Häber and Suntz also conducted the experiments of the influence of wall materials on pollutants emissions in FWI of propane/air flames with a wide range of equivalence ratios as the supplement for the previous studies.…”

Section: Arrangements Of Fuel Types Flame Types and The Plate Positimentioning

confidence: 99%

Pollutants Emissions of CO and Soot from Flame-wall Interactions in Fundamental and Practical Energy Conversion Systems: A Review

Luo¹,

Liu²

2018

ES Energy Environ.

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Flame-wall interactions (FWI) as one kind of fundamental combustion phenomenon is universally found in various laboratory and practical combustion devices. It not only affects the combustion and energy conversion efficiency but also induces severe pollutants emissions. This review summarizes the pollutants emission characteristics in FWI from CO and soot aspects. The investigations of CO formation from FWI in various fundamental and practical energy conversion systems with different fuel types, operating conditions, sampling and analyzing methods and etc. are separately discussed. Meanwhile, multiple advanced laser diagnostics techniques are also adopted in different laboratory impinging flames to acquire more accurate and precise measurements of CO distributions in FWI. To gain more knowledge of pollutants emissions in FWI, the behaviors of soot from practical internal engines are observed with the aid of visualization techniques. Studies that utilize different combustion system configurations to modulate soot formation in FWI of practical engines are conducted as well. Recent literature subsequently evaluates the variations of soot morphology and nanostructure in FWI. The characteristics of soot particle size distribution function (PSDF) from FWI are briefly studied via burner-stabilized stagnation (BBS) flames at laboratory scale. The review ends with the unresolved issues for the future research.

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Section: Arrangements Of Fuel Types Flame Types and The Plate Positimentioning

confidence: 99%

Pollutants Emissions of CO and Soot from Flame-wall Interactions in Fundamental and Practical Energy Conversion Systems: A Review

Luo¹,

Liu²

2018

ES Energy Environ.

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“…The emitted, time-resolved luminescence decay is a function of surface temperature and can therefore be employed for thermometry purposes [2][3][4]. A second popular approach relies on the temperature dependent ratio of two spectrally separated emission peaks of certain phosphor materials [5,6].…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional cycle-resolved exhaust valve temperature measurements in an optically accessible internal combustion engine using thermographic phosphors

et al. 2011

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Phosphor thermometry was employed to measure the temperature distribution of the exhaust valves in an optically accessible direct injection internal combustion engine. A CMOS high-speed camera was used to twodimensionally resolve the temperature dependent luminescence decay of the phosphor Gd 3 Ga 5 O 12 :Cr. Measurements were performed under motored and fired conditions for several degrees crank angle to determine the temperature distributions within cycles. Additionally, several binders have been tested in terms of survivability and signal strength to guarantee ideal phosphor coating.

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“…A flame stops propagating towards a cool wall and the flame front is thus quenched, because heat losses are too large to keep chemical reactions near the wall surface. Due to FWI in an engine, the pollutant emissions, such as hydrocarbons (HC) in crevices [5] and carbon monoxide (CO) [6], can be formed, and flame flashback might happen [7,8]. In recent years, the development of engines is in the direction of miniaturization, which increases the surface-to-volume ratio and the FWI will more easily occur, compared to that of larger single-cylinder displacement [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Quenching distance was measured through direct visualization and wall heat flux was processed from the time evolution of wall surface temperature, for both head-on and side-wall interactions. To gain a detailed understanding of transport phenomena and reaction in near-wall boundary layers of combustion chambers, Fuyuto et al [5] measured temperature and species in a quenching boundary layer for a premixed methane-air flat flame side-wall interaction using the…”

Section: Introductionmentioning

confidence: 99%

Effect of Wall Temperature on Acetylene Diffusion Flame–Wall Interaction Based on Optical Diagnostics and CFD Simulation

et al. 2018

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Abstract:In order to elucidate the effect of wall temperature on a diffusion flame-wall interaction, an acetylene diffusion flame in a head-on quenching type was investigated. Direct photography, two-color thermometry, soot-LII (laser-induced incandescence), OH-LIF (laser-induced fluorescence) and numerical simulation with detailed reaction mechanisms were employed to find out the influence mechanism of wall temperature on near-wall combustion performance and emission characteristics. It is clearly shown through optical diagnostics and computation fluid dynamics (CFD) simulation that, compared with cold wall, the high temperature zone for hot wall becomes wider, and the smaller quenching layer is formed due to the higher wall heat flux. High-concentration soot emission is formed primarily near the outer flame far from the wall. CH 2 O, CO and HC emissions are decreased as wall temperature rises, while the formation of soot and A 4 is increased. A diffusion flame-wall interaction structure is proposed to reveal the influence mechanism of wall temperature.

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Temperature and species measurement in a quenching boundary layer on a flat-flame burner

Cited by 34 publications

References 27 publications

Pollutants Emissions of CO and Soot from Flame-wall Interactions in Fundamental and Practical Energy Conversion Systems: A Review

Pollutants Emissions of CO and Soot from Flame-wall Interactions in Fundamental and Practical Energy Conversion Systems: A Review

Two-dimensional cycle-resolved exhaust valve temperature measurements in an optically accessible internal combustion engine using thermographic phosphors

Effect of Wall Temperature on Acetylene Diffusion Flame–Wall Interaction Based on Optical Diagnostics and CFD Simulation

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