Results 11 to 20 of about 1,283 (194)

Experimental Investigation on the Effects of the Geometry of the Pilot Burner on Main Flame

open access: yesEnergies, 2021
Various kinds of pilot burners were experimentally investigated to examine the effects of their geometry and their location relative to the main burner of a real size combustor.
Cheol Woo Lee, In Su Kim, Jung Goo Hong
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

A Pressurized Vitiated Co-Flow Burner and Its Preliminary Application for a Methane Lifted Flame

open access: yesEnergies, 2018
A new pressurized vitiated co-flow burner (PVCB) was designed and built for the investigation of lifted flame properties and was supported by a vitiated co-flow of hot combustion products from a lean H2/air flame at a controllable pressure; its ...
Qiushi Qin   +5 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

Mechanisms of flame stabilisation at low lifted height in a turbulent lifted slot-jet flame

open access: yesJournal of Fluid Mechanics, 2015
A turbulent lifted slot-jet flame is studied using direct numerical simulation (DNS). A one-step chemistry model is employed with a mixture-fraction-dependent activation energy which can reproduce qualitatively the dependence of the laminar burning rate on the equivalence ratio that is typical of hydrocarbon fuels. The basic structure of the flame base
Shahram Karami   +3 more
openaire   +2 more sources

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

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

Burned Gas Characteristics of Laminar Lifted Flame at the Beginning of Stream Heating

open access: yesJournal of Thermal Science and Technology, 2011
This research experimentally investigates the exhaust gas characteristics of a methane-air lifted-jet flame with elevated stream temperatures up to 450 K. Emission indices of NOx and CO were measured by direct gas sampling using a gas detector tube.
Mitsutomo HIROTA   +2 more
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

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