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Experimental study of combustion in a turbulent free shear layer formed at a rearward facing step

Conference · · AIAA Pap.; (United States)
OSTI ID:5141499
A premixed propane-air flame is stabilized in a turbulent free shear layer formed at a rearward facing step. The mean and rms averages of the turbulent velocity flow field are determined by laser Doppler velocity for both reacting and non-reacting flows. The effect of combustion is to shift the layer toward the recirculation zone and reduce the flame spread. For reacting flow, the growth rate is unchanged except very near the step. The probability density function of the velocity is bimodial near the origin of the reacting layer and single-peaked but often skewed elsewhere. Large scale structures dominate the reacting shear layer. 24 refs.
Research Organization:
Univ of Calif, Berkeley, USA
OSTI ID:
5141499
Report Number(s):
CONF-810106-
Conference Information:
Journal Name: AIAA Pap.; (United States)
Country of Publication:
United States
Language:
English