Results 101 to 110 of about 45,053 (298)

Equivolumetric Evolution of Planar Curves

open access: yesAbstract and Applied Analysis, 2014
We present the equivolumetric evolution of planar curves, which is a new type of curvature dependent evolution for a flame propagation model. This evolution reflects the nonlinear contribution of the curvature of the front to the flame propagation speed.
Hwan Pyo Moon
doaj   +1 more source

Power-Law Wrinkling Turbulence-Flame Interaction Model for Astrophysical Flames

open access: yes, 2014
We extend a model for turbulence-flame interactions (TFI) to consider astrophysical flames with a particular focus on combustion in type Ia supernovae.
Calder, Alan C.   +2 more
core   +1 more source

Influence of Particle Size, Moisture, and Cloud Density on Wood Dust Ignition

open access: yesChemie Ingenieur Technik, EarlyView.
The ignition and combustion of particle clouds are strongly affected by particle interactions. This study uses spectroscopy to examine effects of particle size, water content, and cloud density. Results show ignition delay rises with larger size and density, whereas combustion duration depends mainly on water and density due to moisture‐driven ...
Matteo Giesen   +2 more
wiley   +1 more source

Study on suppression effect and mechanisms of phosphorus-containing recycling substance on flame propagation of methane/coal dust composite explosion

open access: yesMeikuang Anquan
Magnesium ammonium phosphate (MgNH4PO4·6H2O) is a phosphorus-containing blockage commonly found in sewage treatment pipelines. In order to study its suppression effect on the methane/coal dust composite explosion, magnesium ammonium phosphate was ...
Li LIU   +7 more
doaj   +1 more source

Feasibility of reduced gravity experiments involving quiescent, uniform particle cloud combustion [PDF]

open access: yes
The study of combustible particle clouds is of fundamental scientific interest as well as a practical concern. The principal scientific interests are the characteristic combustion properties, especially flame structure, propagation rates, stability ...
Berlad, Abraham L.   +3 more
core   +1 more source

Modelling of continuous low‐temperature emulsion co‐polymerization in 3D‐printed reactor

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
A kinetic model for the emulsion copolymerization of butyl acrylate/styrene at low temperatures is proposed and validated against experiments with a redox initiator system. The model was successfully transferred to a 3D‐printed tubular reactor and conversions of more than 80% and small particles sizes below 40 nm were observed.
Ferel Issa   +2 more
wiley   +1 more source

Study on the significant effects of ignition energy and gas volume fraction on gas explosion pressure and flame propagation speed

open access: yesMeikuang Anquan
The maximum flame propagation speed, the peak pressure and the pressure rise rate of gas explosion were studied under the influence of two factors of ignition energy and gas volume fraction, by using the orthogonal experimental method in a closed ...
Liang ZHANG, Fangfang LAI, Jingde XU
doaj   +1 more source

Visualization of Aluminum Dust Flame Propagation in a Square-Section Tube

open access: yesChemical Engineering Transactions, 2018
Metallic dust explosion is a challenging research topic. One key point of investigation is the flame propagation velocity, which can be determined experimentally by direct visualization of the explosions.
Clement Chanut   +3 more
doaj   +1 more source

Asymptotics for turbulent flame speeds of the viscous G-equation enhanced by cellular and shear flows

open access: yes, 2010
G-equations are well-known front propagation models in turbulent combustion and describe the front motion law in the form of local normal velocity equal to a constant (laminar speed) plus the normal projection of fluid velocity. In level set formulation,
A. Fannjiang   +24 more
core   +1 more source

Effect of different flue gas recirculation rates on low‐NOx combustion characteristics: A numerical simulation based on the combustion process of a gas boiler

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract NOx emissions from gas boilers severely impact the environment, and flue gas recirculation (FGR) technology can effectively reduce such emissions, yet the effects of different FGR rates on combustion performance and NOx formation remain unclear. This study thus used numerical simulation (via ANSYS Fluent, adopting the realizable k‐ε turbulence
Chao Min   +3 more
wiley   +1 more source

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