Results 11 to 20 of about 560 (183)

Large Eddy Simulation of Partially Premixed Flame with Local Extinction Phenomenon

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The Sydney partially premixed flame FJ200-5GP-Lr75-103 case with the local extinction phenomenon is studied by large eddy simulation (LES) coupled with the dynamic k equation sub-grid scale model and the dynamic thickened flame (DTF) combustion model. To
ZENG Haixiang, WANG Ping, SHROTRIYA Prashant, JIANG Linsong, MURUGESAN Meenatchidevi
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

An experimental study on coflow diffusion combustion in a pellet-packed bed with different bed lengths [PDF]

open access: yesRoyal Society Open Science, 2018
In experimental investigations on axial symmetry, over-ventilated CH4/air diffusion combustion in a packed bed is executed to study the height, shape and stability of the flame.
Junrui Shi   +6 more
doaj   +1 more source

Lifted Partially Premixed Flames in Microgravity [PDF]

open access: yes42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004
Lifted Double and Triple flames are established in the UIC-NASA Partially Premixed microgravity rig. The flames examined in this paper are established above a coannular burner because its axisymmetric geometry allows for future implementation of other non-intrusive optical diagnostic techniques easily.
Andrew Lock   +5 more
openaire   +1 more source

Experimental and Numerical Study of Oxygen Diluted Partially Premixed Dimethyl Ether/ Methane Counter Flow Flame

open access: yesChemical Engineering Transactions, 2017
The oxygen diluted partially premixed dimethyl ether/methane counter flow flames were discussed in this paper. Flame images and flame structures were obtained through experiments and numerical simulation.
J. Luo, W. Li, L. Tian, L. Liu
doaj   +1 more source

A novel diffusion flux modeling for laminar premixed flame simulation with OpenFOAM

open access: yesResults in Engineering, 2023
In this study, we developed a mass diffusion coefficient model for premixed combustion to reduce the computational time, in mixture-averaged diffusivities to serve as a microcomputer resource.
Panit Kamma, Chakrit Suvanjumrat
doaj   +1 more source

Flamelet Characteristics of Gaseous and Spray Lifted Flames on Two-Dimensional Direct Numerical Simulations

open access: yesJournal of Fluid Science and Technology, 2008
The detailed behaviors of gaseous and spray lifted flames are studied by two- dimensional direct numerical simulations (DNS), and the characteristics of the flamelets are investigated in terms of two key variables for flamelet modeling, namely mixture ...
Yuya BABA, Ryoichi KUROSE
doaj   +1 more source

Flame structure simulation in a methane/air coflow partially premixed burner

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
The effect of the equivalence ratio on the partially premixed methane / air laminar flame structure, in a coflow atmospheric burner was simulated. Three equivalence ratios were studied (Φ=1.6, Φ=2.0, Φ=3.5) keeping constant the released energy.
Julio Rendón   +2 more
doaj   +1 more source

Experimental Assessment on the Coupling Effect of Mixing Length and Methane-Ammonia Blends on Flame Stability and Emissions

open access: yesEnergies, 2023
Lean premixed combustion mode has become attractive for utilization in industrial gas turbines due to its ability to meet strict emissions regulations without compromising engine efficiency.
Marwan Abdullah   +2 more
doaj   +1 more source

Effect of Pressure, Environment Temperature, Jet Velocity and Nitrogen Dilution on the Liftoff Characteristics of a N2-in-H2 Jet Flame in a Vitiated Co-flow

open access: yesEurasian Chemico-Technological Journal, 2014
The CO2 emission prevention advantage of generating power with high hydrogen content fuels using gas turbines motivates an improved understanding of the ignition behavior of hydrogen in premixed and partially premixed environments.
A. North   +4 more
doaj   +1 more source

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