Direct and indirect measurements of Markstein numbers of premixed flames

Journal Article · Sat Dec 01 04:00:00 EST 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90004-B· OSTI ID:5880177

Searby, G; Quinard, J ^[1]

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1. Lab. de Recherche en Combustion, UA 1117 du CNRS, Univ. de Provence, Service 252, 13397 Marseille Cedex 13 (FR)

This work reports experimental measurements of the Markstein number (sensitivity to strain and curvature) of premixed diluted flames of hydrogen, methane, ethylene, and propane. Measurements are made on weakly stretched freely propagating quasi-planar flames. Three different methods of deducing the Markstein number are presented and compared - a direct method in which the stretch and the change in burning velocity are measured locally, a global method based on the amplitude of the response of the flame to a periodic shear flow, and a third method that relates the Markstein number to the burning velocity at which an unperturbed flame spontaneously develops cellular structures. The direct method is found to give the least precise results.

• OSTI ID: 5880177
• Journal Information: Combustion and Flame; (USA), Journal Name: Combustion and Flame; (USA) Vol. 82:3-4; ISSN CBFMA; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
025000 -- Petroleum-- Combustion
03 NATURAL GAS
034000 -- Natural Gas-- Combustion
08 HYDROGEN
083000* -- Hydrogen-- Combustion-- (1990-)
ALKANES
ALKENES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
ELEMENTS
ETHYLENE
FLAME PROPAGATION
FLAMES
HYDROCARBONS
HYDROGEN
KINETICS
METHANE
NONMETALS
ORGANIC COMPOUNDS
PROPANE
REACTION KINETICS