Wall heat fluxes and CO formation/oxidation during laminar and turbulent side-wall quenching of methane and DME flames

Kosaka, Hirofumi; Zentgraf, Florian; Scholtissek, Arne; Bischoff, L.; Häber, Thomas; Suntz, Rainer; Albert, Barbara; Hasse, Christian; Dreizler, Andreas

doi:10.1016/j.ijheatfluidflow.2018.01.009

Cited by 62 publications

(49 citation statements)

References 38 publications

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“…Within the simulations, the transitions near the 339 nm excitation of the Ã 1 A 2 ←X 1 A 1 system are considered. Figure 2 shows the setup used in the experimental studies by Kosaka et al (2018Kosaka et al ( , 2019 that are examined in this work and the numerical subdomain. A homogeneous mixture of dry air and fuel enters the experimental domain from the nozzle at ambient conditions.…”

Section: Co-simulation Of Computed Signalsmentioning

confidence: 99%

“…In this work two experimental studies are considered. In the first one (Kosaka et al 2018), Coherent anti-Stokes Raman spectroscopy (CARS) and two-photon laser-induced fluorescence (LIF) of the CO molecule are used to determine the thermo-chemical state of methane-air and DME-air flames with respect to the point-wise gas phase temperatures and CO concentrations. Wall-normal profiles of species concentrations are measured using this technique in order to validate CFD predictions.…”

Section: Experimental and Numerical Setupmentioning

confidence: 99%

“…Recently, flame-wall interactions in a side-wall quenching (SWQ) geometry were studied experimentally (Jainski et al 2017a, b;Kosaka et al 2019Kosaka et al , 2018 and numerically (Ganter et al 2017(Ganter et al , 2018Efimov et al 2019) for methane-air flames. In the experimental studies of Kosaka et al (2018Kosaka et al ( , 2019 DME was considered for the first time. The first study (Kosaka et al 2018) analyzed the near-wall thermo-chemical state of the flames using Coherent anti-Stokes Raman spectroscopy (CARS) for temperature and twophoton laser-induced fluorescence (LIF) of the CO molecule.…”

Section: Introductionmentioning

confidence: 99%

“…In the experimental studies of Kosaka et al (2018Kosaka et al ( , 2019 DME was considered for the first time. The first study (Kosaka et al 2018) analyzed the near-wall thermo-chemical state of the flames using Coherent anti-Stokes Raman spectroscopy (CARS) for temperature and twophoton laser-induced fluorescence (LIF) of the CO molecule. In a second measurement campaign (Kosaka et al 2019), the local heat-release rate (HRR) and its correlation with the flame structure of laminar and turbulent methane-air and DME-air flames in a SWQ geometry were analyzed using HRR imaging with simultaneous OH-LIF and CH 2 O-LIF measurements.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical Investigation of Local Heat-Release Rates and Thermo-Chemical States in Side-Wall Quenching of Laminar Methane and Dimethyl Ether Flames

Steinhausen

Luo

Popp

et al. 2020

Flow Turbulence Combust

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The local heat-release rate and the thermo-chemical state of laminar methane and dimethyl ether flames in a side-wall quenching configuration are analyzed. Both, detailed chemistry simulations and reduced chemistry manifolds, namely Flamelet-Generated Manifolds (FGM), Quenching Flamelet-generated Manifolds (QFM) and Reaction-Diffusion Manifolds (REDIM), are compared to experimental data of local heat-release rate imaging of the lab-scale side-wall quenching burner at Technical University of Darmstadt. To enable a direct comparison between the measurements and the numerical simulations, the measurement signals are computed in all numerical approaches. Considering experimental uncertainties, the detailed chemistry simulations show a reasonable agreement with the experimental heat-release rate. The comparison of the FGM, QFM and REDIM with the detailed simulations shows the high prediction quality of the chemistry manifolds. For the first time, the thermo-chemical state during quenching of a dimethyl ether-air flame is examined numerically. Therefore, the carbon monoxide and temperature predictions are analyzed in the vicinity of the wall. The obtained results are consistent with previous studies for methane-air flames and extend these findings to more complex oxygenated fuels. Furthermore, this work presents the first comparison of the QFM and the REDIM in a side-wall quenching burner.

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Section: Co-simulation Of Computed Signalsmentioning

confidence: 99%

Section: Experimental and Numerical Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Investigation of Local Heat-Release Rates and Thermo-Chemical States in Side-Wall Quenching of Laminar Methane and Dimethyl Ether Flames

Steinhausen

Luo

Popp

et al. 2020

Flow Turbulence Combust

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“…Except for developing the relevant laser diagnostics measurements in FWI in some studies, the effects of several experimental parameters including equivalence ratios, laminar and turbulent flow conditions and plate temperatures on pollutants emission characteristics were considered in the investigation of FWI through laser-based diagnostics [91][92][93][94][95][97][98][99]101 techniques.…”

Section: Effects Of Different Operating Conditions Considered On Fwi mentioning

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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Diffusion and Transport Studies

Altuner

Bekmezci²,

Şen³

2022

Handbook of Magnetic Hybrid Nanoalloys and Their Nanocomposites

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Wall heat fluxes and CO formation/oxidation during laminar and turbulent side-wall quenching of methane and DME flames

Cited by 62 publications

References 38 publications

Numerical Investigation of Local Heat-Release Rates and Thermo-Chemical States in Side-Wall Quenching of Laminar Methane and Dimethyl Ether Flames

Numerical Investigation of Local Heat-Release Rates and Thermo-Chemical States in Side-Wall Quenching of Laminar Methane and Dimethyl Ether Flames

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

Diffusion and Transport Studies

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