Frequency response of swirl flow behind an axial swirler

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Abstract

This paper deals with the frequency response of swirl flow behind an axial swirler. Vortex breakdown resulting in the formation of a precessing vortex core is considered. The influence of the swirl intensity and the nozzle confinement effect on the frequency response of the PVC is studied. Regimes with the presence of PVC were determined using two microphones. The Strouhal number depends linearly on the swirl parameter and weakly on the Reynolds number. The measurement results are used to derive an empirical dependence of the Strouhal number on a modified geometric swirl number. This allows a generalization of the frequency characteristics of swirling flows with a PVC for the class of axial vane swirlers, which are most widely used in engineering.

Original languageEnglish
Title of host publicationHeat and Mass Transfer and Hydrodynamics in Swirling Flows, HMTHSF 2019
Subtitle of host publicationProceedings of the 7th International Conference
EditorsAlexander I. Leontiev, Yuriy A. Kuzma-Kichta, Shota A. Piralishvili, Sergey V. Veretennikov, Oleg A. Evdokimov
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419629
DOIs
Publication statusPublished - 31 Mar 2020
Event7th International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows, HMTHSF 2019 - Rybinsk, Russian Federation
Duration: 16 Oct 201918 Oct 2019

Publication series

NameAIP Conference Proceedings
Volume2211
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows, HMTHSF 2019
CountryRussian Federation
CityRybinsk
Period16.10.201918.10.2019

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