Swirl flow response to transverse and axial acoustic forcing
The present study is an experimental investigation on the effect of axial and transverse acoustic forcing on a generic swirl flow. The aim is to provide a qualitative understanding of typical swirl flow response to transverse acoustic forcing, for a better understanding of the response of swirl-stab...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2014-09-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0059/_pdf/-char/en |
| _version_ | 1819364483990028288 |
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| author | Aditya SAURABH Christian Oliver PASCHEREIT |
| author_facet | Aditya SAURABH Christian Oliver PASCHEREIT |
| author_sort | Aditya SAURABH |
| collection | DOAJ |
| description | The present study is an experimental investigation on the effect of axial and transverse acoustic forcing on a generic swirl flow. The aim is to provide a qualitative understanding of typical swirl flow response to transverse acoustic forcing, for a better understanding of the response of swirl-stabilized flames to the same configuration of acoustic forcing. The latter is critical for the ongoing research on thermoacoustic instability in annular gas turbine combustors. A single burner test-rig with transverse extensions to facilitate transverse acoustic modes is employed in this experimental study. The swirl flow, established using a generic radial swirl generator, features vortex breakdown. Two transverse forcing configurations are studied: a) symmetric forcing which leads to a pressure antinode at the burner, and, b) antisymmetric forcing which results in a velocity antinode at the burner location. The study is based on results from planar streamwise and crosswise flow field measurements. We find that while the symmetric forcing configuration causes a flow response similar to axial forcing, antisymmetric forcing results in a helical response. |
| first_indexed | 2024-12-24T22:59:40Z |
| format | Article |
| id | doaj.art-299803c01f424c5bad1967ac794dd3bd |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-24T22:59:40Z |
| publishDate | 2014-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-299803c01f424c5bad1967ac794dd3bd2022-12-21T16:35:10ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582014-09-0193JFST0059JFST005910.1299/jfst.2014jfst0059jfstSwirl flow response to transverse and axial acoustic forcingAditya SAURABH0Christian Oliver PASCHEREIT1Chair of Fluid Dynamics, Hermann-Föttinger-Institut Technische Universität BerlinChair of Fluid Dynamics, Hermann-Föttinger-Institut Technische Universität BerlinThe present study is an experimental investigation on the effect of axial and transverse acoustic forcing on a generic swirl flow. The aim is to provide a qualitative understanding of typical swirl flow response to transverse acoustic forcing, for a better understanding of the response of swirl-stabilized flames to the same configuration of acoustic forcing. The latter is critical for the ongoing research on thermoacoustic instability in annular gas turbine combustors. A single burner test-rig with transverse extensions to facilitate transverse acoustic modes is employed in this experimental study. The swirl flow, established using a generic radial swirl generator, features vortex breakdown. Two transverse forcing configurations are studied: a) symmetric forcing which leads to a pressure antinode at the burner, and, b) antisymmetric forcing which results in a velocity antinode at the burner location. The study is based on results from planar streamwise and crosswise flow field measurements. We find that while the symmetric forcing configuration causes a flow response similar to axial forcing, antisymmetric forcing results in a helical response.https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0059/_pdf/-char/enannular combustorstransverse acoustic forcingswirl flows |
| spellingShingle | Aditya SAURABH Christian Oliver PASCHEREIT Swirl flow response to transverse and axial acoustic forcing Journal of Fluid Science and Technology annular combustors transverse acoustic forcing swirl flows |
| title | Swirl flow response to transverse and axial acoustic forcing |
| title_full | Swirl flow response to transverse and axial acoustic forcing |
| title_fullStr | Swirl flow response to transverse and axial acoustic forcing |
| title_full_unstemmed | Swirl flow response to transverse and axial acoustic forcing |
| title_short | Swirl flow response to transverse and axial acoustic forcing |
| title_sort | swirl flow response to transverse and axial acoustic forcing |
| topic | annular combustors transverse acoustic forcing swirl flows |
| url | https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0059/_pdf/-char/en |
| work_keys_str_mv | AT adityasaurabh swirlflowresponsetotransverseandaxialacousticforcing AT christianoliverpaschereit swirlflowresponsetotransverseandaxialacousticforcing |