Simultaneous Measurements of Concentration and Velocity in an Open Premixed Turbulent Flame
作者:
J. B. MOSS,
期刊:
Combustion Science and Technology
(Taylor Available online 1980)
卷期:
Volume 22,
issue 3-4
页码: 119-129
ISSN:0010-2202
年代: 1980
DOI:10.1080/00102208008952377
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Measurements have been made in the turbulent premixed flame in an LPG/ air mixture issuing from a 50 mm diameter pipe. The flame was of the classical bunsen type with a half cone angle of 16° Measurements were made along a line at an angle of about 50° to the normal to the flame front. Concentration, or the progress variable c, was measured by the light scatter technique and velocity u by laser Doppler velocimetry. The correlation between u and c is found to be positive through much of the flame indicating a counter-gradient flux. The joint probability density function (pdf) ofuandcis well modelled by essentially burnt and unburnt gas with only a small contribution of the partially reacted gas. The conditioned pdf' s for velocity in the unburnt and burnt gas show a considerable increase in both mean and variance for the burnt gas.
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