Results 21 to 30 of about 5,746 (302)
Original scale simulation of gas explosion at heading face in coal mines
Meikuang Anquan, 2023 To study the propagation of gas explosion shock wave and flame in coal mine heading face at real scale, the numerical simulation software of gas explosion was used to establish roadway models of different scales, and the influence of premixed gas ...
Yunfei ZHU +3 more
doaj +1 more source
Influence of Local Accumulation of Polyethylene Dust Cloud on Flame Propagation
Chemical Engineering Transactions, 2019 The flame propagation characteristic of polyethylene dust cloud inside a semi-open tube is studied in virtue of high-speed photographing technology. The rules of the influence of initial distribution range of polyethylene dust cloud on flame speed and ...
Lei Pang +4 more
doaj +1 more source
Journal of Thermal Science and Technology, 2023 To investigate the effects of inert-gas addition on the dynamic behavior and propagation characteristics of spherically expanding hydrogen-air flames, the experiments of premixed combustion were performed in a closed chamber.
Toshiyuki KATSUMI +6 more
doaj +1 more source
Expansion Coefficients and Propagation Speeds of Premixed n-Butane–Air Flames
Energies, 2023 The propagation speeds of premixed n-butane–air mixtures (2.0–5.7 vol%) were investigated under various initial conditions (pressures of 0.4–1.2 bar; temperatures of 289–500 K). The study consists of both, experimental measurements using two different enclosures (a sphere and a cylinder) and kinetic modeling via a dedicated computing program.
Domnina Razus +3 more
openaire +2 more sources
The effect of fine droplets on laminar propagation speed of a strained acetone-methane flame: Experiment and simulations [PDF]
, 2021 In this study, we investigate the effect of the presence of fuel droplets, their size and concentration, on stretched laminar flame speeds. We consider premixed strained methane/air mixtures, with the addition of small acetone droplets, and compare the ...
Oliveira, Pedro M.de +10 more
core +2 more sources
Effects of Composition Heterogeneities on Flame Kernel Propagation: A DNS Study
Fluids, 2020 In this study, a new set of direct numerical simulations is generated and used to examine the influence of mixture composition heterogeneities on the propagation of a premixed iso-octane/air spherical turbulent flame, with a representative chemical ...
Aimad Er-raiy +2 more
doaj +1 more source
Nihon 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
Spherical flame initiation and propagation with thermally sensitive intermediate kinetics [PDF]
, 2011 Spherical flame initiation and propagation with thermally sensitive intermediate kinetics are studied analytically within the framework of large activation energy and quasi-steady assumptions.
Huangwei Zhang +3 more
core +1 more source
Numerical Simulation of the Influence of CO2 on the Combustion Characteristics and NOX of Biogas
Frontiers in Energy Research, 2022 The existence of inert gases such as N2 and CO2 in biogas will reduce the proportion of combustible components in syngas and affect the combustion and NOX formation characteristics.
Jinshuang Ma +6 more
doaj +1 more source
Effects of radiation on large-scale spherical flame propagation [PDF]
, 2017 One-dimensional numerical simulations are conducted for large-scale spherical flame propagation in near-stoichiometric methane/air mixture. With the help of adaptive mesh refinement, we simulate the spherical flame propagation up to a radius of 4 m ...
Zheng Chen, Chen, Zheng
core +1 more source