Effects of co- and counter-swirl on the droplet characteristics in a spray flame

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dc.contributor.authorHadef, R
dc.contributor.authorLenze, B
dc.date.accessioned2022-04-27T03:23:27Z
dc.date.available2022-04-27T03:23:27Z
dc.date.issued2008
dc.description.abstractThis paper reports measurements of droplet characteristics and flow field in a spray flame with inner and outer swirling air streams. The spatial distribution of droplet characteristics produced by the burner’s airblast atomizer was measured using dual-phase Doppler anemometry (PDA). The spray flame was operated near the lean blow-out limit at two flow conditions: co-swirling (flow rotation in the same direction) and counter-swirling (flow rotation in opposite directions). In both cases, the flame exhibited a U-shaped form and was marked by a large central recirculation zone. Based on the measurements of the droplet velocity components, differences between both configurations appeared for the counter-rotational setup mainly in the near burner region, where the decrease of total swirl causes deeper penetration of the droplets from the inner duct into the combustion chamber, resulting in a much more homogeneous distribution than the other one. The droplet size in terms of the Sauter mean diameter (SMD) shows little variation in the change of the direction swirl condition. Application of counter-swirl results in more turbulent droplet motion.ar
dc.identifier.urihttp://hdl.handle.net/123456789/12953
dc.language.isoenar
dc.publisherELSEVIERar
dc.subjectSprayar
dc.subjectPhase Doppler anemometryar
dc.subjectSwirlar
dc.subjectFlamear
dc.subjectAirblastar
dc.titleEffects of co- and counter-swirl on the droplet characteristics in a spray flamear
dc.typeArticlear
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