Experimental study and analytical reconstruction of precessing vortex in a tangential swirler
IV Litvinov, SI Shtork, PA Kuibin, SV Alekseenko… - International Journal of …, 2013 - Elsevier
We report on experimental and analytical studies of strongly swirling air flow in the near-field
of a generic axisymmetric tangential swirler used often as swirl generator in combustors,
phase separators or mixing devices. The focus was on the characterization of the precessing
vortex core (PVC) for a range of swirl numbers S= 1.4–2.4 and Reynolds numbers of 14,460–
38,300. The velocity field and the spectra measured with a Laser–Doppler anemometer
confirmed in all cases the occurrence of PVC and the central recirculation zone (CRZ) that …
of a generic axisymmetric tangential swirler used often as swirl generator in combustors,
phase separators or mixing devices. The focus was on the characterization of the precessing
vortex core (PVC) for a range of swirl numbers S= 1.4–2.4 and Reynolds numbers of 14,460–
38,300. The velocity field and the spectra measured with a Laser–Doppler anemometer
confirmed in all cases the occurrence of PVC and the central recirculation zone (CRZ) that …
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