Experimental study of the flowfield of a V-shaped premixed turbulent flame

Conference · Wed Dec 31 23:00:00 EST 1980

OSTI ID:6507269

Cheng, R K; Ng, T T

The flowfield of a V-shaped, premixed ethylene/air flame in grid induced turbulence has been studied using Laser Doubler Velocimetry. The experimental conditions covered free-stream velocities of 5 and 7 m/s and equivalence ratios ranging from 0.6 to 0.78. The two-dimensional velocity vectors obtained indicate that flow deflection in the free stream was significant and seemed to correlate with the flame angle. The influence of the flame holder wake on the flame was demonstrated. In the presence of the flame, an increase in the turbulence level in the free stream was found and was attributed to fluctuations in flow deflection induced by the fluctuating flame.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6507269
• Report Number(s): LBL-12141; CONF-810704-4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKENES
CHEMICAL REACTIONS
COMBUSTION
ETHYLENE
FLAME PROPAGATION
FLAMES
FLUCTUATIONS
FLUIDS
GASES
HYDROCARBONS
ORGANIC COMPOUNDS
OXIDATION
THERMOCHEMICAL PROCESSES
TURBULENCE
VARIATIONS
VELOCITY