Raman spectroscopy measurements of flame quenching in a duct-type crevice

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5954266

Fairchild, P W; Fleeter, R D; Fendell, F E

Flame/wall interactions in a duct-type crevice (simulated by two parallel walls) have been investigated by making Raman scattering measurements of the spatial temperature profile for a range of wall separations and flame stoichiometry. Experiments using both cold (isothermal) and hot (adiabatic) walls in an atmospheric pressure, premixed, propane/air flame show that, as the wall separation is reduced, opposite thermal boundary layers begin to interact. The effect is more severe for the leaner fuel mixtures where the flame speed has been reduced. Results with a hot wall show the reduced thermal layer thickness is associated with the flame front position moving closer to the wall.

• Research Organization: TRW Space and Technology Group, Redondo Beach, CA (USA). Engineering Sciences Lab.
• OSTI ID: 5954266
• Report Number(s): AD-A-161584/8/XAB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
CHEMICAL REACTIONS
CRACKS
DUCTS
EMISSION
FLAME PROPAGATION
FLUID FLOW
HIGH TEMPERATURE
HYDROCARBONS
INTERACTIONS
LAMINAR FLOW
LAYERS
LIGHT SCATTERING
ORGANIC COMPOUNDS
PROPANE
QUENCHING
RAMAN SPECTRA
REDUCTION
SCATTERING
SPECTRA
STOICHIOMETRY
VELOCITY
WALLS