Results 81 to 90 of about 44,661 (206)

Effect of inert gas injection parameters on explosion suppression of H2-CH4 mixtures

Gong-kuang zidonghua
To investigate the effect of inert gas injection parameters on the explosion characteristics of H2-CH4 mixtures, experiments were carried out in a horizontal pipeline to study the suppression of H2-CH4 mixture explosions by N2 and CO2.
LI Shengli, WANG Changlu, ZHENG Yi, LI Bin   +3 more
doaj   +1 more source

Turbulent front speed in the Fisher equation: dependence on Damkohler number

, 2010
Direct numerical simulations and mean-field theory are used to model reactive front propagation in a turbulent medium. In the mean-field approach, memory effects of turbulent diffusion are taken into account to estimate the front speed in cases when the ...
Babkovskaia, N., Brandenburg, A., Haugen, N. E. L.   +2 more
core   +1 more source

Experimental research on flame propagation characteristics of coal dust combustion

Journal of Measurement Science and Instrumentation, 2021
The presence of coal dust explosions in coal mining are significant safety hazards. This study mainly explores the flame propagation of coal dust combustion so as to provide a theoretical basis for the prevention and control of coal dust explosions.
LIU Yifei, ZHANG Yun, YANG Zhenxin, LIU Xuanshen, CHEN Chengfang, BU Lingtao, XU Sen, CAO Weiguo   +7 more
doaj  

Influence of the Wall Heat Transfer on Flame Propagation [PDF]

, 2016
In the internal combustion engines, the flames interact with the walls of the cylinder, which affects the flame propagation characteristics and the engine performance. The flame tends to quench near the wall, which is due to wall heat fluxes.
Li, Shuhan
core  

Flame fronts in Supernovae Ia and their pulsational stability

, 2013
The structure of the deflagration burning front in type Ia supernovae is considered. The parameters of the flame are obtained: its normal velocity and thickness. The results are in good agreement with the previous works of different authors.
A. Dolgov, Aranson, Arnett, Aspden, Barenblatt, Bayliss, Blinnikov, Blinnikov, Blinnikov, Blinnikov, Bravo, Brayton, Bychkov, Caughlan, Chabrier, Clavin, Frost, Gear, Glazyrin, Glazyrin, Gostintsev, Hillebrandt, Iben, Ivanova, Joulin, Kamionkowski, Khokhlov, Khokhlov, Landau, Landau, Landau, Linán, Livne, Mueller, Niemeyer, Niemeyer, Niemeyer, Niemeyer, Nomoto, Nomoto, Potekhin, Röpke, Röpke, S. I. Blinnikov, S. I. Glazyrin, Samarskii, Timmes, Timmes, Weber, Williams, Woosley, Woosley, Woosley, Woosley, Yakovlev, Zeldovich, Zeldovich, Zeldovich   +57 more
core   +1 more source

A Study on the Flame and Pressure Characteristics of Ultrafine Calcium Carbonate (CaCO₃) Powder in Suppressing Gas Explosions

Fire
This study investigates the suppression effect of ultrafine CaCO3 powder on gas explosions through a series of experiments conducted in a medium-scale explosion tube (9.6 m in length) with varying concentrations of ultrafine CaCO3.
Guiyuan Li, Zuohui Xu, Sihan Ji, Jingde Xu, Yang Hu, Junhai Liu, Zhie Wang   +6 more
doaj   +1 more source

Numerical Study of Flame Propagation Morphology for Deflagration in the Pipeline Using Proper Orthogonal Decomposition

Advances in Civil Engineering, 2018
A multilevel independent spatial modal analysis of flame propagation characteristics of a deflagration in a specific pipeline was performed using the proper orthogonal decomposition (POD) method, in order to research the evolution process of the ...
Weimin Wu, Jianyao Yao, Jingcheng Liu, Zejun Wu, Jiawen Liu   +4 more
doaj   +1 more source

Explosion characteristics and overpressure prediction of hydrogen-doped natural gas under ambient turbulence conditions

Case Studies in Thermal Engineering
Explosions of combustible gases under ambient turbulence exhibit complex flame propagation and overpressure evolution characteristics, posing challenges to explosion safety assessments.
Ranran Li, Zhongmo Xu, Mingzhi Li, Shuhong Li, Zhenyi Liu, Zihao Xiu, Qiqi Liu   +6 more
doaj   +1 more source

Lean flame dynamics through a 2D lattice of alkane droplets in air

, 2014
International audienceFlame propagation along a 1-D array or through a 2D-lattice of fuel droplets has long been suggested to schematize spray-flames spreading in a two-phase premixture.
Denet, Bruno, Haldenwang, Pierre, Nicoli, Colette   +2 more
core   +1 more source

Influence of equivalence ratio and hydrogen addition on thermoacoustic instabilities in premixed methane and propane flames in vertical tubes

Case Studies in Thermal Engineering
This research examines the behavior of premixed flames within a vertical tube, considering both an open and a closed end configuration. The study utilizes a pilot flame as the ignition source.
Abdullah M.A. Alsharif, Robert Woolley
doaj   +1 more source