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Experimental study of characteristics and stability regimes of cross flow non-premixed liquefied petroleum gas and air flames
Published in Combustion Institute
2019
Abstract
This experimental work analyzes the characteristics and stability regimes of Liquefied Petroleum Gas (LPG) - air flames in a cross-flow non-premixed configuration. LPG is injected from a horizontal porous plate kept in flush with the bottom wall of a wind tunnel and air flows parallel over its surface. Three fuel flow rates corresponding to power ratings of 0.25 kW, 0.45 kW and 0.75 kW are considered. A typical boundary layer type flame forms in this baseline configuration at low air velocities. Flame configuration changes as the air velocity is varied and the flame becomes unstable when the air flow rate is increased beyond a given value. To improve the flame stability, a backward facing step or a rectangular bluff-body has been placed at a distance of 10 mm ahead of the leading edge of the porous plate. For each fuel flow rate, the air velocity is gradually increased to study the resultant flame regimes. High quality videos are captured to visualize the flame configurations and to determine the flame regime for all the cases. Each case has been repeated thrice. Stability maps are plotted as a function of air and fuel flow rates. Results show improved flame stability in the presence of obstacles as compared to baseline cases. © Asia-Pacific Conference on Combustion, ASPACC 2019.All right reserved.
About the journal
Journal12th Asia-Pacific Conference on Combustion, ASPACC 2019
PublisherCombustion Institute
Open AccessNo
Concepts (19)
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    Air
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    Boundary layers
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    Combustion
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    Flow rate
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    Gasoline
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    Parallel flow
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    POROUS PLATES
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    Stability
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    Thermodynamic stability
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    Wind tunnels
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    Backward facing step
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    Baseline configurations
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    FLAME CONFIGURATION
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    Flame stability
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    Fuel flow rates
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    HIGH QUALITY VIDEO
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    Liquefied petroleum gas (lpg)
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    STABILITY REGIMES
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    Liquefied petroleum gas