Results 31 to 40 of about 197,531 (156)

The Cellular Burning Regime in Type Ia Supernova Explosions - I. Flame Propagation into Quiescent Fuel

open access: yes, 2003
We present a numerical investigation of the cellular burning regime in Type Ia supernova explosions. This regime holds at small scales (i.e. below the Gibson scale), which are unresolved in large-scale Type Ia supernova simulations.
Hillebrandt, W.   +2 more
core   +2 more sources

Stability of non-premixed turbulent methane flames: Numerical simulations of the critical diameter and flame stability limits

open access: yesFuel Processing Technology
A Computational Fluid Dynamics (CFD) model is developed and validated against experimental data to predict the critical diameter and stability limits of non-premixed turbulent methane flames.
Mina Kazemi   +2 more
doaj   +1 more source

Effect of N2 Replacement by CO2 in Coaxial-Flow on the Combustion and Emission of a Diffusion Flame

open access: yesEnergies, 2018
In this study, a double concentric burner burning methane with an annular coaxially-flowing oxidizer was adopted to operate the diffusion flame in lifted flame regime. The effects of coaxial-flow velocity, coaxial-flow composition variation through total
Haisheng Zhen, Zhilong Wei, Zhenbin Chen
doaj   +1 more source

Application of Fractal Grids in Industrial Low-Swirl combustion [PDF]

open access: yes, 2015
Fractal-grid-generated turbulence is a successful technique to significantly increase the reaction rate in the center of a low-swirl flame. Previous results (Verbeek et al. Combust. Flame 162(1), 129–143, 2015) are promising, but the experiments are only
Meer, T.H. van der   +2 more
core   +3 more sources

Simulation and Research of Methane Premixed Combustion Characteristics Based on Constant Volume Combustion Chamber with Different Ignition Modes

open access: yesEnergies, 2023
Dual spark plug ignition can accelerate the burning velocity of nature gas and improve the engine performance. However, the mechanism between the two flames and the disturbance characteristics of flame to flow field during the combustion process under ...
Yue Wang   +3 more
doaj   +1 more source

Stability of pole solutions for planar propagating flames: II. Properties of eigenvalues/eigenfunctions and implications to stability [PDF]

open access: yes, 2000
In a previous paper (Part I) we focused our attention on pole solutions that arise in the context of flame propagation. The nonlinear development that follows after a planar flame front becomes unstable is described by a single nonlinear PDE which admits
Matalon, Moshe, Vaynblat, Dimitri
core  

Heavy metal free thermal stabilizing-flame retarding modifier for plasticized poly(vinyl chloride)

open access: yesMaterials Research Express, 2020
Our research aimed to find a new material that can be an efficient heavy metal free flame retardant for plasticized poly(vinyl chloride) comparable to the conventional flame retardants.
Ali I Al-Mosawi, Kálmán Marossy
doaj   +1 more source

Experimental Assessment on the Coupling Effect of Mixing Length and Methane-Ammonia Blends on Flame Stability and Emissions

open access: yesEnergies, 2023
Lean premixed combustion mode has become attractive for utilization in industrial gas turbines due to its ability to meet strict emissions regulations without compromising engine efficiency.
Marwan Abdullah   +2 more
doaj   +1 more source

Impact of the Nozzle Angles on Counterflow Diffusion Flame to Strain Rate Variations [PDF]

open access: yes, 2016
The Diffusion laminar combustion of liquefied petroleum gas (LPG) and air is studied experimentally using counterflowing axisymmetric jets. Attributes of this type of burner arrangement for studying laminar combustion are discussed in terms of flame ...
Abass, P. J. (Prof)   +4 more
core   +1 more source

Effect of Burner Wall Material on Microjet Hydrogen Diffusion Flames near Extinction: A Numerical Study

open access: yesEnergies, 2021
Characteristics of microjet hydrogen diffusion flames stabilized near extinction are investigated numerically. Two-dimensional simulations are carried out using a detailed reaction mechanism.
Aravind Muraleedharan   +4 more
doaj   +1 more source

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