Dynamic behavior of a premixed turbulent flame front

Conference · Thu Jan 01 04:00:00 EST 1981 · Symp. (Int.) Combust., (Proc.); (United States)

OSTI ID:5445257

Boyer, L; Clavin, P; Sabathier, F

Using the laser tomographic method, the local and instantaneous velocity of the front of a turbulent premixed flame is compared to the longitudinal fluctuation velocity of the turbulent stream in the fresh mixture just ahead the flame front, this latter quantity being measured by L.D.A. The experiments are carried out on a lean flame of a propane air mixture diluted in nitrogen. A strong discrepancy between the fluctuations of the flame front velocity and the velocity fluctuations of the upstream flow is experimentally exhibited in the low frequency range of the corresponding time spectra. A relaxation model, taking into account the time response mechanism of the flame front, is proposed as an extension of the previous theoretical works. 12 refs.

• Research Organization: Univ d'Aix-Marseille 1 (Univ de Provence), France
• OSTI ID: 5445257
• Report Number(s): CONF-800809-
• Conference Information: Journal Name: Symp. (Int.) Combust., (Proc.); (United States)
• Country of Publication: United States
• Language: English

Related Subjects

090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
DIAGNOSTIC TECHNIQUES
DISPERSIONS
ELEMENTS
FLAMES
FLUID FLOW
FLUIDS
GASES
HYDROCARBONS
KINETICS
LASERS
MIXTURES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
PROPANE
REACTION KINETICS
TOMOGRAPHY
TURBULENT FLOW