Results 31 to 40 of about 32,675 (265)

Analytical treatment of 2D steady flames anchored in high-velocity streams

, 2009
The problem of burning of high-velocity gas streams in channels is revisited. Previous treatments of this issue are found to be incomplete. It is shown that despite relative smallness of the transversal gas velocity, it plays crucial role in determining ...
Bedat, Bedat, Frankel, Kazakov, Kazakov, Kirill A. Kazakov, Matalon, Pelce, Tsien, Zel’dovich, Zel’dovich   +10 more
core   +1 more source

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

, 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., Niemeyer, J. C., Roepke, F. K.   +2 more
core   +2 more sources

Flame spread in laminar mixing layers: the triple flame [PDF]

, 1993
In the present paper we investígate flame spread in laminar mixing layers both experimentally and numerically. First, a burner has been designed and built such that stationary triple ñames can be stabilised in a coflowing stream with well defined linear ...
Bray, K.N.C., Kioni, P.N., Liñán Martínez, Amable, Rogg, B.   +3 more
core   +2 more sources

Numerical Study of an In-line Pre-Heating Treatment along the Axis on the Propagation of a Laminar Premixed Flame in a Channel

Journal of Thermal Science and Technology, 2009
In this study, an in-line pre-heating effect on the propagation of a laminar premixed flame in a two-dimensional channel is investigated numerically. An in-line pre-heating thickness of 1mm is generated by imposing uniform external high-temperature along
Akter HOSSAIN, Nobuyuki OSHIMA, Yuji NAKAMURA, Marie OSHIMA   +3 more
doaj   +1 more source

Premixed flame propagation in vertical tubes

, 2015
Analytical treatment of premixed flame propagation in vertical tubes with smooth walls is given. Using the on-shell flame description, equations describing quasi-steady flame with a small but finite front thickness are obtained and solved numerically. It
Kazakov, Kirill A.
core   +1 more source

Flame Enhancement and Quenching in Fluid Flows [PDF]

, 2002
We perform direct numerical simulations (DNS) of an advected scalar field which diffuses and reacts according to a nonlinear reaction law. The objective is to study how the bulk burning rate of the reaction is affected by an imposed flow.
Abel M, Abel M, Alexander Kiselev, Audoly B, Avellaneda M, Berestycki H, Bradley D, Chandrasekhar S, Drazin P G, Fife P C, Kanel Ya, Kolmogorov A N, Leonid Ryzhik, Natalia Vladimirova, Oleg Ruchayskiy, Pelcé P, Peter Constantin, Ronney P D, Taylor G I, Vladimirova N, Volpert A, Williams F A, Zeldovich Ya B   +22 more
core   +2 more sources

Propagation and Extinction of a Cylindrical Premixed Flame Undergoing Equivalence Ratio Fluctuation Near the Lean Limit

Journal of Thermal Science and Technology, 2010
Experimental study was made to investigate the propagation and extinction characteristics of a stretched cylindrical flame undergoing periodic fluctuation of equivalence ratio near the lean limit.
Yosuke SUENAGA, Michio KITANO, Yoichi TAKAHASHI   +2 more
doaj   +1 more source

Combustion and Propulsion Research [PDF]

, 1963
Combustion chemistry is one of the oldest branches of chemical science. Among its pioneers must be counted Lavoisier, Bunsen, and others whose names belong among those of the founders of chemical science.
Penner, S. S.
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Numerical simulation of the influence of pipe length on explosion flame propagation in open-ended and close-ended pipes

Science Progress, 2020
The pipeline length exerts great influence on flame propagation characteristics, Realizable k − ε model and Premixed combustion model were used to study the influence of pipe length on propane-air explosion flame in open-ended and close-ended pipes ...
Xue Li, Ning Zhou, Xuanya Liu, Weiqiu Huang, Bing Chen, Vamegh Rasouli   +5 more
doaj   +1 more source