Results 21 to 30 of about 592,637 (278)

Effect of hydrogen addition on combustion and thermal characteristics of impinging non-premixed jet flames for various heating value gases

open access: yesCase Studies in Thermal Engineering, 2023
This study experimentally investigates the effect of hydrogen addition on combustion and thermal characteristics of impinging non-premixed jet flames for low-heating values gases (LHVGs).
Hyeon Taek Nam   +2 more
doaj   +1 more source

Improvement of Laminar Lifted Flame Stability Excited by High-Frequency Acoustic Oscillation

open access: yesJournal of Thermal Science and Technology, 2009
A high-frequency (20kHz) standing wave was applied to the unburned mixture upstream of a methane-air lifted jet flame using a bolt-clamped Langevin transducer (BLT) to improve stability.
Mitsutomo HIROTA   +3 more
doaj   +1 more source

Effect of a single nanosecond pulsed discharge on a flat methane–air flame

open access: yesApplications in Energy and Combustion Science, 2023
Successful implementation of plasma-assisted combustion in applied thermal processes heavily relies on how the plasma can be formed as it interacts with the reactive flow and what the effects are of such a plasma on the combustion process.
Yupan Bao   +6 more
doaj   +1 more source

Lift-off and blowoff of a diffusion flame between parallel streams of fuel and air [PDF]

open access: yes, 2006
A numerical analysis is presented to describe the liftoff and blowoff of a diffusion flame in the mixing layer between two parallel streams of fuel (mainly methane diluted with nitrogen) and air emerging from porous walls.
Fernández Tarrazo, Eduardo   +2 more
core   +2 more sources

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

Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework

open access: yesEnergies, 2019
Within the framework of a Reynolds averaged numerical simulation (RANS) methodology for modeling turbulence, a comparative numerical study of turbulent lifted H2/N2 flames is presented.
Ali Cemal Benim, Björn Pfeiffelmann
doaj   +1 more source

Improving combustion performance of swirling double-concentric jets flames with rich equivalence ratios

open access: yesCase Studies in Thermal Engineering, 2020
The acoustic excitation method was used to improve the combustion performance of rich-combustion flames of swirling dual-disk double-concentric jets. The unexcited and excited conditions were compared.
Omid Ali Zargar
doaj   +1 more source

Experimental Investigation of Flame Anchoring Behavior in a LOX/LNG Rocket Combustor

open access: yesAerospace, 2023
Hot fire tests of a multi-injector research combustor were performed with liquid-oxygen and liquefied-natural-gas (LOX/LNG) propellants at chamber pressures from 30 up to 67 bar, hence at conditions similar to an upper stage rocket engine.
Jan Martin   +4 more
doaj   +1 more source

Modelling of turbulent lifted jet flames using flamelets: a priori assessment and a posteriori validation [PDF]

open access: yes, 2014
This study focuses on the modelling of turbulent lifted jet flames using flamelets and presumed PDF approach with interests on both flame lift-off height and flame brush structure.
Darbyshire, O, Ruan, S, Swaminathan, N
core   +2 more sources

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