TY - JOUR
T1 - An experimental study on the effects of swirling oxidizer flow and diameter of fuel nozzle on behaviour and light emittance of propane-oxygen non-premixed flame
AU - Javareshkian, Alireza
AU - Tabejamaat, Sadegh
AU - Sarrafan-Sadeghi, Soroush
AU - Baigmohammadi, Mohammadreza
N1 - Publisher Copyright:
© 2017 Society of Thermal Engineers of Serbia.
PY - 2017
Y1 - 2017
N2 - In this study, the stability and the light emittance of non-premixed propane-oxygen flames have been experimentally evaluated with respect to swirling oxidizer flow and variations in fuel nozzle diameter. Hence, three types of the vanes with the swirl angles of 30°, 45°, and 60° have been chosen for producing the desired swirling flows. The main aims of this study are to determine the flame behaviour, light emittance, and also considering the effect of variation in fuel nozzle diameter on combustion phenomena such as flame length, flame shape, and soot free length parameter. The investigation into the flame phenomenology was comprised of variations of the oxidizer and fuel flow velocities (respective Reynolds numbers) and the fuel nozzle diameter. The results showed that the swirl effect could change the flame luminosity and this way could reduce or increase the maximum value of the flame light emittance in the combustion zone. Therefore, investigation into the flame light emittance can give a good clue for studying the mixing quality of reactants, the flame phenomenology (blue flame or sooty flame, localized extinction), and the combustion intensity in non-premixed flames.
AB - In this study, the stability and the light emittance of non-premixed propane-oxygen flames have been experimentally evaluated with respect to swirling oxidizer flow and variations in fuel nozzle diameter. Hence, three types of the vanes with the swirl angles of 30°, 45°, and 60° have been chosen for producing the desired swirling flows. The main aims of this study are to determine the flame behaviour, light emittance, and also considering the effect of variation in fuel nozzle diameter on combustion phenomena such as flame length, flame shape, and soot free length parameter. The investigation into the flame phenomenology was comprised of variations of the oxidizer and fuel flow velocities (respective Reynolds numbers) and the fuel nozzle diameter. The results showed that the swirl effect could change the flame luminosity and this way could reduce or increase the maximum value of the flame light emittance in the combustion zone. Therefore, investigation into the flame light emittance can give a good clue for studying the mixing quality of reactants, the flame phenomenology (blue flame or sooty flame, localized extinction), and the combustion intensity in non-premixed flames.
KW - Fuel nozzle
KW - Light emittance
KW - Non-premixed flame
KW - Oxygen
KW - Propane
KW - Swirl effect
UR - http://www.scopus.com/inward/record.url?scp=85025448974&partnerID=8YFLogxK
U2 - 10.2298/TSCI140706210J
DO - 10.2298/TSCI140706210J
M3 - Article
AN - SCOPUS:85025448974
SN - 0354-9836
VL - 21
SP - 1453
EP - 1462
JO - Thermal Science
JF - Thermal Science
IS - 3
ER -