Results 31 to 40 of about 82,213 (306)

Numerical Study on the Intrinsic Instability of High-Temperature Premixed Flames under the Conditions of Constant Density and Constant Pressure in the Unburned Gas

open access: yesJournal of Fluid Science and Technology, 2013
We studied numerically the intrinsic instability of high-temperature premixed flames, where the burned-gas temperature was constant, under the conditions of constant density and constant pressure in the unburned gas.
Satoshi KADOWAKI   +2 more
doaj   +1 more source

Effect of thermal expansion on the linear stability of planar premixed flames for a simple chain-branching model: The high activation energy asymptotic limit [PDF]

open access: yes, 2008
The linear stability of freely propagating, adiabatic, planar premixed ames is investigated in the context of a simple chain-branching chemistry model consisting of a chain-branching reaction step and a completion reaction step.
G. J. Sharpe   +2 more
core   +1 more source

Cellular Flame Instabilities [PDF]

open access: yes, 2017
The onset of Darrieus Landau and thermo-diffusive instabilities in an exploding spherical laminar flame is marked by the value of the Peclet number, Pecl, which is dependent upon the Markstein number.
Bradley, D, Lawes, M, Mumby, R
core   +1 more source

Premixed Combustion of Kapok (ceiba pentandra) seed oil on Perforated Burner

open access: yesInternational Journal of Renewable Energy Development, 2014
Availability of fossil fuels in the world decrease gradually due to excessive fuel exploitation. This situations push researcher to look for alternative fuels as a source of renewable energy, one of them is kapok (ceiba pentandra) seed oil.
I.K.G. Wirawan   +3 more
doaj   +1 more source

The Thermonuclear Explosion Of Chandrasekhar Mass White Dwarfs [PDF]

open access: yes, 1996
The flame born in the deep interior of a white dwarf that becomes a Type Ia supernova is subject to several instabilities. We briefly review these instabilities and the corresponding flame acceleration. We discuss the conditions necessary for each of the
Blinnikov S. I.   +17 more
core   +3 more sources

The Effects of the Activation Energy on the Intrinsic Instability of Adiabatic and Non-Adiabatic Premixed Flames

open access: yesJournal of Fluid Science and Technology, 2008
The effects of the activation energy on the intrinsic instability of adiabatic and non-adiabatic premixed flames were studied by two-dimensional unsteady calculations of reactive flows based on the compressible Navier-Stokes equation.
Amornrat KAEWPRADAP, Satoshi KADOWAKI
doaj   +1 more source

Characterisation of flame retarded recycled PET foams produced by batch foaming

open access: yesPolymer Testing, 2023
CO2-assisted batch foaming was used to manufacture low-density (ρ = 200–350 kg/m3) microcellular foams from bottle-grade recycled poly(ethylene terephthalate) (rPET) in flame retarded form. The foamability of the PET regrind was enhanced using a reactive
Nóra Lukács   +4 more
doaj   +1 more source

High hydrogen content syngas fuel burning in lean premixed spherical flames at elevated pressures: Effects of preferential diffusion [PDF]

open access: yes, 2016
This study addresses the effects of preferential diffusion on flame structure and propagation of high hydrogen content (HHC) turbulent lean premixed hydrogen-carbon monoxide syngas flames at elevated pressures.
Luo, KH   +4 more
core   +1 more source

Instability of lean H2-O2-CO2 premixed flames on a flat burner

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Global warming and air pollution mainly caused by emissions of CO2 and NOx are serious problems. We focus on a lean H2-O2 premixed flame because H2-O2 premixed flame emits no CO2 and NOx.
Toshiyuki KATSUMI   +3 more
doaj   +1 more source

Cellular structures of laminar lean premixed H2/CH4/air polyhedral flames

open access: yesApplications in Energy and Combustion Science, 2023
Fundamental studies on the effects of differential diffusion of hydrogen (H2) on flame structure are motivated as the high diffusivity of H2 presents challenges for the modeling and optimization of combustion systems.
Shuguo Shi   +6 more
doaj   +1 more source

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