Results 1 to 10 of about 82,303 (202)
Structure And Dynamics Of Modulated Traveling Waves In Cellular Flames [PDF]
Physica D: Nonlinear Phenomena, 1994 We describe spatial and temporal patterns in cylindrical premixed flames in the cellular regime, $Le < 1$, where the Lewis number $Le$ is the ratio of thermal to mass diffusivity of a deficient component of the combustible mixture.
A. Bayliss +48 more
core +3 more sources
Study on flame fractal characteristics of coal dust explosion at the decompression position of Hartmann tube [PDF]
Scientific ReportsThe explosion of coal dust is powerful and has a wide range of spread, which can easily cause mass death and injury. In this paper, the flame microstructure and propagation characteristics of coal dust explosion are recorded by high-speed photography ...
Zemiao Yang, Ke Gao, Yinhui Wang
doaj +2 more sources
Formation of Cellular Flames and Increase in Flame Velocity Generated by Intrinsic Instability.
Transactions of the Japan Society for Aeronautical and Space Sciences, 2002 The formation of cellular flames and the increase in flame velocity generated by intrinsic instability are studied by two-dimensional (2-D) and three-dimensional (3-D) unsteady calculations of reactive flows based on the compressible Navier-Stokes equation.
Satoshi Kadowaki
exaly +3 more sources
Journal of Thermal Science and Technology, 2021 Effects of pressure and heat loss on the unstable motion of cellular-flame fronts in hydrogen-air lean premixed flames were numerically investigated. We adopted the reaction mechanism for hydrogen-oxygen combustion, modeled with seventeen reversible ...
Satoshi KADOWAKI +5 more
doaj +1 more source
Improvement of Municipal Solid Waste Syngas Premixed Flame with Cellular Structure on a Flat Burner
Energies, 2023 This research was conducted to study the flame instability of syngas derived from raw municipal solid waste (MSW) and its potential as a natural gas (NG) replacement in power generation. MSW syngas is a mixture of various components such as methane (CH4),
Amornrat Kaewpradap +4 more
doaj +1 more source
Comptes Rendus. Mécanique, 2023 The initial mechanism of cellular instabilities on the flame surface was investigated experimentally. Firstly, mono-dispersed ethanol droplets were created via the Wilson cloud principle in a spherical combustion chamber, and aerosol ethanol/air flame ...
Kaya Eyice, Deniz +4 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2023 This study focused on the biogas-air premixed flames formed on a flat burner under the conditions of oxygen enrichment and hydrogen addition to improve the combustion characteristics of biogas-air premixtures.
Yui AKAGAWA +4 more
doaj +1 more source
Thermal-expansion induced cellular flames [PDF]
Combustion and Flame, 1982 Abstract This paper is devoted to a study of the nonlinear evolution of a disturbed plane flame front in a hydrodynamic instability regime induced by thermal expansion of a burned gas. It is shown that, in sufficiently small-scale flames, spontaneous instability appears in the guise of stationary wide-spaced irregular folds.
Michelson, D.M., Sivashinsky, G.I.
openaire +2 more sources
Journal of Thermal Science and Technology, 2021 In this paper, the characteristics of hydrogen-propane-butane-air lean premixed flames on a flat flame burner were experimentally studied. To elucidate the shape and fluctuation of premixed flames, the cell width, RMS of fluctuation, peak frequency and ...
Satoshi NAKATSURU +5 more
doaj +1 more source
Burner-stabilized cellular flames [PDF]
Quarterly of Applied Mathematics, 1990 We consider a model that governs the behavior of a premixed flame anchored on a flat burner. We show that a steady planar flame is stable for Lewis numbers L L in the interval L l > L > L u
David O. Olagunju, Bernard J. Matkowsky
openaire +1 more source