scholarly journals Preliminary DNS Results of a Turbulent Hydrogen/Methane Flame

2020 ◽  
Author(s):  
Jen Zen Ho ◽  
Davy Brouzet ◽  
Mohsen Talei ◽  
Robert L. Gordon
Keyword(s):  
Methane Flame

On Heat Transfer in the Stabilization Zone of an Attached Methane Flame in Air Coflow

2014 ◽  
Author(s):  
Sylvain Lamige ◽  
C. Galizzi ◽  
M. KГјhni ◽  
K.M. Lyons ◽  
Frederic Andre ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Methane Flame

scholarly journals Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1018
Author(s):  
Massimo Marcioni ◽  
Jenny Alongi ◽  
Elisabetta Ranucci ◽  
Mario Malinconico ◽  
Paola Laurienzo ◽  
...  
Keyword(s):  
Maximum Stress ◽  
Water Resistance ◽  
Prolonged Exposure ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Molecular Weights ◽  
New Family ◽  
Methylene Groups ◽  
Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

Effect of hydrogen addition on the ionization of partially premixed methane flame

Fuel ◽  
2021 ◽  
Vol 285 ◽  
pp. 119141
Author(s):  
Li Guo ◽  
Ming Zhai ◽  
Qianhao Shen ◽  
Hongkun Guo ◽  
Peng Dong
Keyword(s):  
Hydrogen Addition ◽  
Methane Flame ◽  
Partially Premixed

The effect of fine droplets on laminar propagation speed of a strained acetone-methane flame: Experiment and simulations

2021 ◽  
Vol 229 ◽  
pp. 111377
Author(s):  
Luming Fan ◽  
Bo Tian ◽  
Cheng Tung Chong ◽  
Mohammad Nazri Mohd Jaafar ◽  
Kenji Tanno ◽  
...  
Keyword(s):  
Propagation Speed ◽  
Methane Flame

Spectral characteristics of a premixed oxy-methane flame in atmospheric conditions

Energy ◽  
2016 ◽  
Vol 116 ◽  
pp. 986-997 ◽  
Author(s):  
Jeongseog Oh
Keyword(s):  
Spectral Characteristics ◽  
Atmospheric Conditions ◽  
Methane Flame

Interferometric Investigation of the Thermoacoustics in a Swirl Stabilized Methane Flame

2015 ◽  
Author(s):  
Johannes Peterleithner ◽  
Andreas Marn ◽  
Jakob Woisetschläger
Keyword(s):  
Particle Image Velocimetry ◽  
Combustion Chamber ◽  
Particle Image ◽  
Atmospheric Model ◽  
Fused Silica ◽  
Laser Vibrometer ◽  
Schlieren Visualization ◽  
Image Velocimetry ◽  
Interferometric Investigation ◽  
Methane Flame

In this work, an atmospheric model combustion chamber was characterized employing Laser Vibrometry, chemiluminescence and Particle Image Velocimetry. The test object was a variable geometry burner enclosed with a liner, with the flame optically accessible through four fused silica windows. In this burner with adjustable flame conditions the cavity of the atmospheric model combustion chamber was excited at a frequency around 200Hz. Resonant and non-resonant flame conditions were investigated and compared by laser vibrometer interferometry, schlieren visualization and OH*/CH* chemiluminescence. Additionally, the velocity field was recorded with Particle Image Velocimetry, while the aerodynamics of the burner plenum was analyzed with Computational Fluid Dynamics.

The effect of electron ambipolar diffusion on the ion current signals in a premixed methane flame

Fuel ◽  
2019 ◽  
Vol 256 ◽  
pp. 115813 ◽  
Author(s):  
Guangyu Dong ◽  
Zhiwei Feng ◽  
Liguang Li ◽  
Haifeng Lu
Keyword(s):  
Ambipolar Diffusion ◽  
Ion Current ◽  
Methane Flame
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