Results 1 to 10 of about 61,419 (308)

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

Curvature and confinement effects for flame speed measurements in laminar spherical and cylindrical flames. [PDF]

open access: yes, 2013
This paper discusses methods used to obtain laminar flame speeds in spherical laminar premixed flames. Most recent studies express the laminar flame consumption speed as ρb/ρudR/dt, where R is the flame radius and ρb/ρu is the ratio of the burnt to the ...
Bonhomme, Adrien   +2 more
core   +2 more sources

Flame stretching by electric field

open access: yesJournal of Physics: Conference Series, 2019
Abstract The paper considers the issues related to the study of the mechanisms of controlling the combustion of hydrocarbon fuels by electric fields. It is shown that influence of weak electric field on combustion in laminar mode leads to a change in the degree of flame stretching (Karlovitz number).
A V Tupikin, V V Zamashchikov
openaire   +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

Instabilities and soot formation in high-pressure, rich, iso-octane-air explosion flames - 1. Dynamical structure [PDF]

open access: yes, 2007
Simultaneous OH planar laser-induced fluorescence (PLIF) and Rayleigh scattering measurements have been performed on 2-bar rich iso-octane–air explosion flames obtained in the optically accessible Leeds combustion bomb.
Lockett, R. D., Woolley, R.
core   +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

Temperature dependence of the Laminar burning velocity of methanol flames [PDF]

open access: yes, 2012
To better understand and predict the combustion behavior of methanol in engines, sound knowledge of the effect of the pressure, unburned mixture temperature, and composition on the laminar burning velocity is required.
Christensen, M   +4 more
core   +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

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

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