Abstract
Evaluation of Cool Flame Characteristics of Droplet Pairs with Two-dimensional Calculation
Highlights
Isolated droplet combustion has been extensively investigated because it provides significant knowledge on spray combustion
First, cool flame ignition behaviour of n-heptane droplet pair was investigated at 0.1 MPa and 750 K
The smaller droplet was surrounded by the cool flame, and the cool flame ignition occurred near the larger droplet
Summary
Isolated droplet combustion has been extensively investigated because it provides significant knowledge on spray combustion. Similar to the previous study[14], Umemura et al theoretically evaluated the flame shape and burning rate of droplet pair with different diameter by solving the potential equation on the mass flux[20]. As a result, they showed that the burning rate was smaller than that of isolated droplet and this tendency was more prominent for smaller droplet. The objective of this study is to clarify the behaviour of cool flame and two-stage ignition of hydrocarbon fuel droplet pairs with different initial diameter.
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