Results 71 to 80 of about 72,917 (300)

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

open access: yes, 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   +10 more
core   +1 more source

Performance Enhancement in Hafnium Oxide Through Homogeneous and Heterogeneous co‐Doping Strategies

open access: yesAdvanced Electronic Materials, EarlyView.
This article presents a comprehensive co‐doping toolkit to optimize the performance and reliability of fluorite‐structure ferroelectrics like hafnium oxide. By employing homogeneous and heterogeneous co‐doping strategies, precise control over crystallization behavior, polarization hysteresis, and oxygen vacancy distribution is achieved.
Shouzhuo Yang   +10 more
wiley   +1 more source

Study on Knocking Intensity under In-Cylinder Flow Field in SI Engines Using a Rapid Compression Machine

open access: yesJournal of Thermal Science and Technology, 2013
Knocking intensity under the in-cylinder flow field was investigated by using a rapid compression machine (RCM). The nitrogen diluted and non-diluted fuel-air mixtures were employed for the examination of the combustion characteristics under the in ...
Taiga HIBI   +6 more
doaj   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

open access: yesAdvanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim   +5 more
wiley   +1 more source

Experimental and Numerical Study on the Plasma-Laser-Induced Ignition of Strut Stabilizer at Different Locations

open access: yesAerospace
The minimum ignition equivalence ratio of the strut stabilizer is an important parameter in the design of integrated afterburners. The ignition location significantly affects the ignition equivalence ratio and flame propagation, and therefore, it should ...
Xin Jia   +5 more
doaj   +1 more source

Effects of Flame Propagation Velocity and Turbulence Intensity on End-Gas Auto-Ignition in a Spark Ignition Gasoline Engine

open access: yesEnergies, 2020
Knocking is a destructive and abnormal combustion phenomenon that hinders modern spark ignition (SI) engine technologies. However, the in-depth mechanism of a single-factor influence on knocking has not been well studied.
Lei Zhou   +3 more
doaj   +1 more source

Modeling turbulent flame propagation [PDF]

open access: yesSymposium (International) on Combustion, 1994
Laser diagnostics and flow simulation techniques are now providing information that, if available 50 years ago, would have allowed Damkohler to show how turbulence generates flame area. In the absence of this information, many turbulent flame speed models have been created, most based on Kolmogorov concepts that ignore the turbulence vortical structure.
openaire   +1 more source

Fundamental approach to laminar flame propagation [PDF]

open access: yes, 1954
The complete system of equations for a theory of laminar flame equations is presented, taking into account both heat conduction and diffusion, for the case of an arbitrary number of simultaneous reactions.
Penner, S. S., von Kármán, Theodore
core  

Simple Model of Propagating Flame Pulsations

open access: yes, 2011
A simple model which exhibits dynamical flame properties in 1D is presented. It is investigated analytically and numerically. The results are applicable to problems of flame propagation in supernovae Ia.Comment: 10 pages, 8 figures, revised version ...
Bayliss   +12 more
core   +1 more source

Triple flames in mixing layers with nonunity Lewis numbers [PDF]

open access: yes, 1998
The present paper is devoted to the study of the effects of nonunity Lewis numbers on triple-flame propagation in nonuniform mixtures. For definiteness, the case of a strained reactive mixing layer is considered. The fuel and oxidizer that are fed to the
Daou, J., Liñán Martínez, Amable
core   +1 more source

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