Results 261 to 270 of about 11,005 (312)

Compressible turbulent flame speeds of highly turbulent standing flames

Proceedings of the Combustion Institute, 2019
Abstract In this paper we present the first measurement of turbulent burning velocities of a highly turbulent compressible standing flame induced by shock-driven turbulence in a Turbulent Shock Tube. High-speed schlieren, chemiluminescence, PIV, and dynamic pressure measurements are made to quantify flame–turbulence interaction for high levels of ...
Jonathan Sosa, Jessica Chambers, Kareem A Ahmed   +2 more
exaly   +2 more sources

Statistics of local and global flame speed and structure for highly turbulent H2/air premixed flames [PDF]

Combustion and Flame, 2021
A statistical analysis is conducted for turbulent hydrogen-air premixed flames at a range of Karlovitz numbers up to 1,126 by direct numerical simulations (DNS) with detailed chemistry.
Wonsik Song, FRANCISCO E Hernández Perez, Efstathios-Al Tingas   +2 more
exaly   +5 more sources

Turbulence Effects on Flame Speed and Flame Structure

AIAA Journal, 1979
Turbulence effects on methane-air flames stabilized in grid turbulence were investigated through measurements of flame speed and mean and fluctuating flame temperature profiles. Published turbulent flame speed correlations were able to correlate the experimental flame speed data but were contradictory in indicating flame structure and combustion ...
K. SMITH, F. GOULDIN
openaire   +1 more source

Turbulent Forced Diffusion Flames

Combustion and Flame, 1995
A microscale, νβ ∼ νσβ13 is introduced for turbulent diffusion flames, where η and σβ respectively, are the Kolmogorov scale and the flame Schmidt number. In terms of this scale, the turbulent mass transfer integrated over a length l of a liquid fuel is shown to be M′= νBlνβ , where μ is the dynamic viscosity and B is the transfer number, B=(Y0∞
Vedat S. Arpaci, C.Y. Li
openaire   +1 more source

Properties of turbulence in turbulent diffusion flames

Combustion and Flame, 1981
Abstract Measurements of flow velocities and the statistical properties of turbulence such as turbulence intensities, probability density function, autocorrelation, length scales, and power spectrum are carried out by laser Doppler velocimeter, along with the measurements of gas temperature and gas species concentration in turbulent jet flows with ...
TAKAGI, T, SHIN, HD Shin, Hyun Dong, ISHIO, A   +2 more
openaire   +1 more source

Turbulence Production in Premixed Turbulent Flames

Combustion Science and Technology, 1981
Abstract —A second order closure theory developed earlier is used to study the processes influencing the turbulent velocity field in a premixed turbulent flame with degrees of heat release of practical interest. The flow field is chosen so that the time-averaged flame structure is one-dimensional and statistically stationary. Earlier work suggests that
K. N. C. BRAY, PAUL A. LIBBY, GORO MASUYA, J. B. MOSS   +3 more
openaire   +1 more source

Parallel Simulations of Swirling Turbulent Flames

The Journal of Supercomputing, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Christopher P. Stone, Suresh Menon
openaire   +1 more source

Turbulent swirling flame prediction

6th Fluid and PlasmaDynamics Conference, 1973
Finite-difference predictions are made of turbulent boundary layer swirling flames. This paper is concerned essentially with a more accurate simulation of the flow, the turbulence and reaction models. Current developments are discussed. It is demonstrated that the effect of swirl on flame size, shape, and combustion intensity may be represented by ...
openaire   +1 more source

Turbulent diffusion flames

Symposium (International) on Combustion, 1973
Experimental results are presented for turbulent diffusion flames of a round jet of hydrogen in a co-flowing stream of air. The aim of the work is to provide comprehensive data which will assist in refining the newer and more-powerful theories coming into use.
J.H. Kent, R.W. Bilger
openaire   +1 more source