Results 11 to 20 of about 906,379 (184)

Explore artificial neural networks for solving complex hydrocarbon chemistry in turbulent reactive flows [PDF]

open access: yesFundamental Research, 2022
Global warming caused by the use of fossil fuels is a common concern of the world today. It is of practical importance to conduct in-depth fundamental research and optimal design for modern engine combustors through high-fidelity computational fluid ...
Jian An, Fei Qin, Jian Zhang, Zhuyin Ren
doaj   +2 more sources

Validating Confined Flame Noise Simulation Using External Sensor [PDF]

open access: yesSensors, 2022
Advancements in lean premixed combustion have increased the efficiency and reduced the amount of greenhouse gas emissions, but they have led to increased noise emissions due to higher turbulence and mixing fluctuations. This study used an external sensor
Andrew J. Williamson   +2 more
doaj   +2 more sources

Exploring Soot Particle Concentration and Emissivity by Transient Thermocouples Measurements in Laminar Partially Premixed Coflow Flames

open access: yesEnergies, 2017
Soot formation in combustion represents a complex phenomenon that strongly depends on several factors such as pressure, temperature, fuel chemical composition, and the extent of premixing. The effect of partial premixing on soot formation is of relevance
Gianluigi De Falco   +5 more
doaj   +3 more sources

Experimental Characterisation of Swirl Stabilized Annular Stratified Flames [PDF]

open access: yes, 2007
A burner for investigating lean stratified premixed flames propagating in intense isotropic turbulence has been developed. Lean pre-mixtures of methane at different equivalence ratios are divided between two concentric co-flows to obtain annular ...
Bonaldo, Alessio
core   +7 more sources

Joint stereo-PIV and NO-LIF in turbulent premixed hydrogen-air flames [PDF]

open access: yes, 2009
A new technique to simultaneously and instantaneously resolve 3D velocity/2D strain rate fields and scalar/scalar gradient fields was developed and evaluated in this study.
Magand, Christelle C. G.
core   +7 more sources

The influence of fuel structure on CO and NOx formation in lean premixed hydrocarbon flames [PDF]

open access: yes, 1978
A study is made of the influence chemical structure of fuel has upon combustion performance through tracing the generation of carbon monoxide and oxides of nitrogen in lean, premixed, hydrocarbon-air flames.
Saleh, H. S. M.
core   +7 more sources

A Lagrangian-based flame index for the transported probability density function method

open access: yesTheoretical and Applied Mechanics Letters, 2022
We propose a new flame index for the transported probability density function (PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as the metrics to identify the ...
Zhen Lu   +4 more
doaj   +1 more source

Impact of Methane and Hydrogen-Enriched Methane Pilot Injection on the Surface Temperature of a Scaled-Down Burner Nozzle Measured Using Phosphor Thermometry

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2022
The surface temperature of a burner nozzle using three different pilot hardware configurations was measured using lifetime phosphor thermometry with the ZnS:Ag phosphor in a gas turbine model combustor designed to mimic the Siemens DLE (Dry Low Emission)
Henrik Feuk   +7 more
doaj   +1 more source

A Method to Image Flame Index in Partially Premixed Flames [PDF]

open access: yes50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2012
This paper describes a new method to image the flame index in partially premixed flames. To improve modeling of partially premixed flames, such as those in gas turbines and scramjets, there is a need to measure the flame index. CHEMKIN modeling of both premixed and non-premixed methane (CH4) / air flames determined that acetone (CH3COCH3) and nitrogen ...
Rosenberg, David, Driscoll, James
openaire   +2 more sources

Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The blow-off limits of methane and hydrogen-mixed gas on the Sydney inhomogeneous inflow jet burner were calculated and studied by large eddy simulation.
ZHOU Xirui, WANG Ping, ZENG Haixiang, ZHANG Yang, PRASHANT Shrotriya, ANTONIO Ferrante, QI Haotian
doaj   +1 more source

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