Results 11 to 20 of about 3,303 (216)

Extinction characteristics of ammonia/air counterflow premixed flames at various pressures

open access: yesJournal of Thermal Science and Technology, 2016
Ammonia has promising features as a carbon-free fuel without greenhouse gas emission. However, due to its low combustion intensity, the combustion characteristics of ammonia have been rarely investigated.
Sophie COLSON   +3 more
doaj   +1 more source

Extinction of Cylindrical Diffusion Flame

open access: yesJournal of Thermal Science and Technology, 2011
An experimental study was performed on the behavior and extinction characteristics of the cylindrical diffusion flame affected by both factors of stretch and curvature.
Yosuke SUENAGA   +2 more
doaj   +1 more source

Effect of Stretch on Local Burning Velocity of Premixed Turbulent Flames

open access: yesJournal of Thermal Science and Technology, 2007
The effect of positive stretch on the local flame properties of turbulent propagating flames in the flamelet regime was investigated experimentally for methane-, hydrogen- and propane-air mixtures with lean and rich having nearly the same laminar burning
Masaya NAKAHARA   +3 more
doaj   +1 more source

Experimental Study on Local Flame Properties of Hydrogen Added Hydrocarbon Premixed Turbulent Flames

open access: yesJournal of Thermal Science and Technology, 2009
This experimental study is performed to investigate directly the local flame properties of turbulent propagating flames at the same weak turbulence condition (u'/SL0=1.4), in order to clarify basically the influence of the addition of hydrogen to ...
Masaya NAKAHARA   +2 more
doaj   +1 more source

Dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions

open access: yesNihon Kikai Gakkai ronbunshu, 2023
To investigate the dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions, the deflagration experiments were conducted in a closed combustion chamber. The dynamic behavior of hydrogen flames was
Toshiyuki KATSUMI   +4 more
doaj   +1 more source

Flame Stabilization and Blow-Off of Ultra-Lean H2-Air Premixed Flames

open access: yesEnergies, 2021
The manner in which an ultra-lean hydrogen flame stabilizes and blows off is crucial for the understanding and design of safe and efficient combustion devices.
Faizan Habib Vance   +3 more
doaj   +1 more source

Buoyant Unstable Behavior of Initially Spherical Lean Hydrogen-Air Premixed Flames

open access: yesEnergies, 2014
Buoyant unstable behavior in initially spherical lean hydrogen-air premixed flames within a center-ignited combustion vessel have been studied experimentally under a wide range of pressures (including reduced, normal, and elevated pressures).
Zuo-Yu Sun   +4 more
doaj   +1 more source

Optimization of a two-step CH4/air reaction mechanism in a CO2-enriched environment for high-fidelity combustion simulations

open access: yesFrontiers in Mechanical Engineering, 2023
In the gas turbine framework, the adoption of carbon capture and storage (CCS) systems coupled with strategies to improve the exhaust CO2 content is a promising technology to abate the carbon footprint of such machines.
S. Castellani   +2 more
doaj   +1 more source

Experimental Study of Stretched Premixed Flame Stabilized in a Flat Channel near a Heated Wall

open access: yesMetals, 2023
In this work, the behavior of a lean premixed stretched flame stabilized in a flat channel near a heated wall was studied. Dependences of the flame front position on the stretch rate parameter at temperatures of the heated wall of 1000 and 1200 K and the
Sergey Mokrin   +2 more
doaj   +1 more source

A review of laminar flame speeds of hydrogen and syngas measured from propagating spherical flames

open access: yesApplications in Energy and Combustion Science, 2020
As promising alternatives to fossil fuels, hydrogen (H2) and syngas are playing important roles in the development and control of high-efficiency, low-emission engines.
Wang Han   +3 more
doaj   +1 more source

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