Results 11 to 20 of about 1,884 (175)

Deformation Study of Lean Methane-Air Premixed Spherically Expanding Flames under a Negative Direct Current Electric Field

Energies, 2016
This paper compares numerical simulations with experiments to study the deformation of lean premixed spherically expanding flames under a negative direct current (DC) electric field.
Chao Li, Xiaomin Wu, Yiming Li, Juncai Hou   +3 more
doaj   +1 more source

Impact of Infinite Thin Flame Approach on the Evaluation of Flame Speed using Spherically Expanding Flames [PDF]

Energy Technology, 2017
AbstractCombustion is an important part of most current and future overall energy‐conversion systems, especially if using renewable fuels in energy‐storage concepts. Therefore, the laminar flame speed, which is a key parameter for the design of combustion systems, needs to be known for a growing multitude of different thermodynamic conditions and fuels.
Zhang, Feichi, Baust, Tobiast, Zirwes. Torsten, Denev, Jordan A., Habisreuther, Peter, Zarzalis, Nikolaus, Bockhorn, Henning   +6 more
openaire   +2 more sources

An Experimental Measurement on Laminar Burning Velocities and Markstein Length of Iso-Butane-Air Mixtures at Ambient Conditions

MATEC Web of Conferences, 2016
In the present work, experimental investigation on laminar combustion of iso-butane-air mixtures was conducted in constant volume explosion vessel. The experiments were conducted at wide range of equivalence ratios ranging between Ф = 0.6 and 1.4 and ...
Yousif Alaeldeen Altag, Sulaiman Shaharin A., Nasif Mohammad Shakir   +2 more
doaj   +1 more source

Effects of Lewis Number on the Evolution of Curvature in Spherically Expanding Turbulent Premixed Flames

Fluids, 2019
The effects of Lewis number on the physical mechanisms pertinent to the curvature evolution have been investigated using three-dimensional Direct Numerical Simulation (DNS) of spherically expanding turbulent premixed flames with characteristic Lewis ...
Ahmad Alqallaf, Markus Klein, Nilanjan Chakraborty   +2 more
doaj   +1 more source

Type Ia Supernova Explosion Models [PDF]

, 2000
Because calibrated light curves of Type Ia supernovae have become a major tool to determine the local expansion rate of the Universe and also its geometrical structure, considerable attention has been given to models of these events over the past couple ...
Aldering G, Arnett WD, Beer A, Blinnikov SI, Blinnikov SI, Buchler JR, Buchler JR, Bychkov VV, Cappellaro E, Chandrasekhar S, Damköhler G, Darrieus G, Garcia-Senz D, Greiner J, Hoeflich P, Homeier D, Imshennik VS, Imshennik VS, Ivanova LN, Kercek A, Khokhlov AM, Khokhlov AM, Khokhlov AM, King AR, Kolmogorov AN, Landau LD, Landau LD, Lewis B, Lucy LB, Lundmark K, Lundmark K, Mair G, Mazzali PA, Mazzali PA, Mihalas D, Mochkovitch R, Mochkovitch R, Müller E, Niemeyer JC, Nomoto K, Nomoto K, Paczynski B, Paczynski B, Pakull MW, Pauldrach AWA, Pskovskii IP, Reinecke M, Reinecke M, Saio H, Schoenfelder V, Shigeyama T, Thielemann FK, Tripp R, Van den Heuvel EPJ, Wellstein S, Williams FA, Zeldovich YB   +56 more
core   +2 more sources

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

Flame propagation and burning rates of methane-air mixtures using schlieren photography [PDF]

, 2016
Different methodology have been shown to produce different results for Markstein length and laminar burning velocity of methane-air mixture. This study attempts to determine the aforesaid parameters using the newly developed closed vessel combustion ...
Mohd. Sies, M., Saat, A., Suhaimi, M. S., Wahid, M. A.   +3 more
core   +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

Experimental n-Hexane-Air Expanding Spherical Flames

, 2018
The effects of initial pressure and temperature on the laminar burning speed of n-hexane-air mixtures were investigated experimentally and numerically. The spherically expanding flame technique with a nonlinear extrapolation procedure was employed to measure the laminar burning speed at atmospheric and sub-atmospheric pressures and at nominal ...
Coronel, Stephanie A., Lapointe, Simon, Mevel, Remy, Thomas, Vaughan L., Chaumeix, Nabiha, Shepherd, Joseph E.   +5 more
openaire   +2 more sources

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