Investigation of flame-generated turbulence in premixed flames at low and high burning velocities

Conference · Fri May 01 04:00:00 EDT 1992 · Experimental Thermal and Fluid Science; (United States)

OSTI ID:7291248

Liu, Yanson; Lenze, B ^[1]

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1. Karlsruhe, Universitaet, (Germany)

Knowledge of the dependence of turbulent flame velocity on such parameters as fuel properties, turbulent fluctuations, and length scales is of central importance for industrial applications such as combustion in motors, gas turbine combustors, and domestic burners. Two unanswered questions concern how aerodynamic turbulence influences the reaction and/or flame speed and how the reaction intensity influences the aerodynamic turbulence values. The reaction velocity has been measured in a stagnation point flame, the turbulence intensities and length scales before and after the flame front being recorded by an LDV system. Laminar burning velocity was varied by using different concentrations of methane-hydrogen-air mixtures. The results show under certain conditions an immense increase in turbulent fluctuations in and after the flame front, measured using conditioned and unconditioned LDV techniques. 6 refs.

• OSTI ID: 7291248
• Report Number(s): CONF-9009342--
• Conference Information: Journal Name: Experimental Thermal and Fluid Science; (United States) Journal Volume: 5:3
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALKANES
CHEMICAL REACTION KINETICS
COMBUSTION CHAMBERS
COMBUSTION KINETICS
DISPERSIONS
DOPPLER EFFECT
FLAMES
FLOW RATE
FLUCTUATIONS
FLUID FLOW
FLUID MECHANICS
FUELS
HYDROCARBONS
HYDROGEN FUELS
KINETICS
LAMINAR FLOW
LASERS
MEASURING INSTRUMENTS
MECHANICS
METHANE
MIXTURES
ORGANIC COMPOUNDS
REACTION KINETICS
STAGNATION POINT
SYNTHETIC FUELS
TURBULENCE
TURBULENT FLOW
VARIATIONS
VELOCIMETERS