Results 21 to 30 of about 1,904 (180)

Laminar flame speed measurements and laser absorption characterization of high-temperature, premixed ethane–air flames

Applications in Energy and Combustion Science
Laminar flame speed, temperature, and pressure measurements were conducted in high-temperature, spherically expanding ethane–air flames. The experiments were conducted in a shock tube, which allows access to a high-temperature regime previously under ...
Alison M. Ferris, Julian J. Girard, Adam J. Susa, Ronald K. Hanson   +3 more
doaj   +1 more source

Double-detonation supernovae of sub-Chandrasekhar mass white dwarfs

, 2007
In the "double-detonation sub-Chandrasekhar" model for type Ia supernovae, a carbon-oxygen (C + O) white dwarf accumulates sufficient amounts of helium such that a detonation ignites in that layer before the Chandrasekhar mass is reached. This detonation
Blinnikov, Branch, Branch, Branch, Colella, Colella, Donat, F. K. Röpke, Gamezo, Gamezo, García-Senz, Glaister, Golombek, Guderley, Han, Imshennik, Khokhlov, Livne, Livne, Livne, Livne, M. Fink, Mazzali, Mulder, Niemeyer, Osher, Parthasarathy, Plewa, Ponchaut, Reinecke, Reinecke, Reinecke, Reinecke, Ruiz-Lapuente, Röpke, Röpke, Röpke, Röpke, Röpke, Röpke, Röpke, Röpke, Schmidt, Schmidt, Sharpe, Smiljanovski, Stritzinger, W. Hillebrandt, Wiggins, Wiggins, Woosley, Woosley   +51 more
core   +1 more source

Instabilities and soot formation in high pressure explosion flames [PDF]

, 2009
Flame instabilities, cellular structures and soot formed in high pressure, rich, spherically expanding iso-octane-air flames have been studied experimentally using high speed Schlieren cinematography, OH fluorescence, and laser induced incandescence ...
Lockett, R. D.
core  

Insights on the physics of SNIa obtained from their gamma-ray emission

, 2016
Type Ia supernovae are thought to be the outcome of the thermonuclear explosion of a carbon/oxygen white dwarf in a close binary system. Their optical light curve is powered by thermalized gamma-rays produced by the radioactive decay of $^{56}$Ni, the ...
Bravo, E., Isern, J., Jean, P., Knödlseder, J.   +3 more
core   +3 more sources

Simulation of turbulent explosion of hydrogen-air mixtures [PDF]

, 2014
Spherically expanding turbulent premixed hydrogen-air flames are computed using the Reynolds-Averaged Navier-Stokes (RANS) approach. The mean reaction rate is modelled using unstrained and strained flamelets, and an algebraic model. Since the temperature
Ahmed, I, Swaminathan, N
core   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Effects of inert gas addition on the characteristics of spherically expanding hydrogen-methane-air premixed flames in closed combustion vessels

Journal of Thermal Science and Technology
In the serious accident at Fukushima Daiichi Nuclear Power Station, the presence of steam together with flammable organic compounds affected the hydrogen explosion. To investigate the effects of addition of inert gas, i.e.
Toshiyuki KATSUMI, Atsushi ZEMBA, Makoto KOGISHI, Kohei IWANAGA, Satoshi ABE, Pascal DIÉVART, Nabiha CHAUMEIX, Satoshi KADOWAKI   +7 more
doaj   +1 more source

Uncertainty in stretch extrapolation of laminar flame speed from expanding spherical flames

Proceedings of the Combustion Institute, 2015
Abstract The present work investigated the uncertainties associated with the extrapolation of stretched flames to zero stretch in flame speed measurements using expanding spherical flames. Direct numerical simulations of time evolution of expanding spherical flames from a small ignition kernel to a propagating front with sufficiently large radius ...
Wu, Fujia, Liang, Wenkai, Chen, Zheng, Ju, Yiguang, Law, Chung K.   +4 more
openaire   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

A length-scale analysis of instabilities in high pressure explosion flames, [PDF]

, 2010
Cellular flame structure in high pressure iso-octane-air explosion flames, obtained in the Leeds combustion bomb, was investigated using Schlieren cinematography and OH laser induced fluorescence.
Lockett, R. D.
core