Results 211 to 220 of about 2,639 (256)

Effects of curvature on flame acceleration in micro channels

Combustion and Flame, 2022
Tao Li, Fanfu Kong
exaly   +2 more sources

Stretch and Curvature Effects on Flames

42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004
To understand how curvature affects the properties of stretched premixed flames including flame temperature, flame speed, and extinction, comparisons among the tubular premixed flame, the opposed jet flame and the one-dimensional planar flame are drawn physically, experimentally and numerically.
Peiyong Wang, Shengteng Hu, Joseph Wehrmeyer, Robert Pitz   +3 more
openaire   +1 more source

Contribution of curvature to flame-stretch effects on premixed flames

Combustion and Flame, 2001
Abstract This experimental investigation considers steady two-dimensional rich and lean premixed methane–air flames established in two configurations, one a two-dimensional slot burner and the other an axisymmetric coannular burner. The flames contain a curved premixed reaction zone that has a tip.
Chun W. Choi, Ishwar K. Puri
openaire   +1 more source

Numerical Investigation of the Curvature Effects on Diffusion Flames

44th AIAA Aerospace Sciences Meeting and Exhibit, 2006
∗+ & Tubular diffusion flames are compared with opposed jet diffusion flames numerically to show the effect of curvature on diffusion flames. The numerical results show that, as in premixed flames, positive curvature strengthens the preferential diffusion and negative curvature weakens the preferential diffusion; the strengthening or weakening effect ...
Peiyong Wang, Shengteng Hu, Robert W. Pitz   +2 more
openaire   +1 more source

CURVATURE EFFECTS ON EDGE-FLAME PROPAGATION IN THE PREMIXED-FLAME REGIME

Combustion Science and Technology, 2004
We examine the effects of curvature on edge-flame propagation speeds as a function of the fuel Lewis number. The diffusion flame supporting the flame edge is assumed to be in Linan's “premixed-flame regime” with oxygen leak-age through the flame caused by excessive heat loss to the bounding surface.
VEDHA NAYAGAM, FORMAN A. WILLIAMS
openaire   +1 more source

Flame curvature and preferential diffusion in the burning intensity of bunsen flames

Symposium (International) on Combustion, 1988
Flame temperature distributions over axisymmetric and two-dimensional Bunsen flames have been experimentally measured for methane, ethylene, and propane mixtures with air, and interpreted on the basis of preferential diffusion and aerodynamic stretching induced by flame curvature.
C.K. Law, P. Cho, M. Mizomoto, H. Yoshida   +3 more
openaire   +1 more source

Premixed flames for arbitrary combinations of strain and curvature

Proceedings of the Combustion Institute, 2021
Abstract Many modeling strategies for combustion rely on laminar flamelet concepts to determine structure and properties of multi-dimensional and turbulent flames. Using flamelet tabulation strategies, the user anticipates certain aspects of the combustion process prior to the simulation and selects a flamelet model which mimics local flame ...
H. Böttler, A. Scholtissek, X. Chen, Z. Chen, C. Hasse   +4 more
openaire   +1 more source

Studies of Curvature Effects on Laminar Premixed Flames: Stationary Cylindrical Flames

Combustion Science and Technology, 1993
Abstract A solution of the stationary cylindrical flame in both source and sink configurations is obtained analytically using simplified reaction rate and diffusion models. The solution is used to investigate the effects of curvature in the absence of stretch and identify the ranges where ducting and source/sink effects are dominant.
TAREK ECHEKKI, J. H. FERZIGER
openaire   +1 more source

Impact of curvature on the kinematic response of small flames

Journal of Engineering Mathematics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wee, Daehyun, Park, Sungbae, Ghoniem, Ahmed F.   +2 more
openaire   +2 more sources

Curvature effects on flame kernels in a turbulent environment

Proceedings of the Combustion Institute, 2002
This paper presents results from the direct numerical simulation (DNS) of flame kernels in various turbulent environments. The flames are fully premixed and propagate through a field of decaying isotropic turbulence. The DNS code solves the fully compressible reacting flow equations using high-order explicit finite differences in space and a third ...
K.W. Jenkins, R.S. Cant
openaire   +1 more source