Temperature and velocity measurements in premixed turbulent flames
Turbulent flame speed data for premixed flames of methane-air, propane-air and ethylene-air mixtures stabilized in grid turbulence are reported and discussed. It is shown that turbulence effects on flame speed cannot be fully correlated by the turbulence length scale and r.m.s. velocity in the cold flow. Rather there appear to be significant flame-flow-turbulence interactions affecting both turbulence level in the reaction zone and measured flame speeds. Results of detailed velocity measurements, including autocorrelations, by laser velocimetry are used to elucidate the nature of these interactions. It is concluded that flame speed experiments must be designed and conducted to provide sufficient information (e.g. boundary conditions) to allow for reconstruction of the flow field and these interactions by modelers if the data are to be of value in turbulent combustion model development and evaluation. 26 refs.
- Research Organization:
- Cornell Univ, Ithaca, NY, USA
- OSTI ID:
- 5199804
- Report Number(s):
- CONF-810106-
- Journal Information:
- AIAA Pap.; (United States), Journal Name: AIAA Pap.; (United States); ISSN AAPRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
034000* -- Natural Gas-- Combustion
090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
AIR
ALKANES
ALKENES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
ETHYLENE
FLAME PROPAGATION
FLAMES
FLUID FLOW
FLUIDS
GASES
HYDROCARBONS
KINETICS
METHANE
ORGANIC COMPOUNDS
PROPANE
REACTION KINETICS
TEMPERATURE MEASUREMENT
TURBULENCE
TURBULENT FLOW