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FUEL-AIR RATIO INFLUENCE ON MIXING PROCESSES BETWEEN PREMIXED ACETYLENE FLAME AND SURROUNDING AIR

ABSTRACT
In this paper, the mean velocity, turbulence intensity and temperature profiles in different cross-sections of premixed acetylene flame and for different air/acetylene ratios are given. For velocity measurements laser-Doppler anemometer was used, while the temperature field measurements were performed by Pt-PtRh 10% thermocouple. LDA measurements and conditional and unconditional statistics of the velocity fluctuations produced by combustion products and surrounding air, can give more detailed data about the character and intensity of turbulent mixing in the flame. By comparative analysis of the obtained mean velocity and temperature profiles, length and width of characteristic regions of the premixed acetylene flame and their characteristic properties were established for different fuel-air ratios. With the increase of acetylene content in the mixture, velocity and temperature fields are considerably changing.
PAPER SUBMITTED: 2001-02-20
PAPER REVISED: 2001-03-13
PAPER ACCEPTED: 2001-05-03
PUBLISHED ONLINE: 2020-08-22
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2000, VOLUME 4, ISSUE Issue 2, PAGES [33 - 40]
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© 2022 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence