Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant
This paper focuses on the relationship between acoustic resonance and vortex shedding from the tube banks of a boiler plant. We have built a model similar to the actual boiler plant to clarify the characteristics of acoustic resonance phenomena and vortex shedding. The model used in-line tube banks...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2008-09-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/3/6/3_6_805/_pdf/-char/en |
| _version_ | 1798021004970164224 |
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| author | Hiromitsu HAMAKAWA Hiroto MATSUE Eiichi NISHIDA Tohru FUKANO |
| author_facet | Hiromitsu HAMAKAWA Hiroto MATSUE Eiichi NISHIDA Tohru FUKANO |
| author_sort | Hiromitsu HAMAKAWA |
| collection | DOAJ |
| description | This paper focuses on the relationship between acoustic resonance and vortex shedding from the tube banks of a boiler plant. We have built a model similar to the actual boiler plant to clarify the characteristics of acoustic resonance phenomena and vortex shedding. The model used in-line tube banks with a small tube pitch ratio. We examined the relationship between the acoustic resonance of the actual plant and that of the model, and measured the sound pressure level, acoustic pressure mode shape, spectrum of velocity fluctuation, and gap velocity. Gap velocity was defined as the mean velocity in the smallest gaps between two neighboring tubes in the transverse direction. As a result, the resonant frequencies and mode shapes of the acoustic resonances in the actual boiler plant agreed well with those in the similar model. We found many peak frequencies in the sound pressure level spectrum when acoustic resonances occurred. The typical Strouhal numbers at the onset velocity of acoustic resonances were about 0.19, 0.26 and 0.52. Periodic velocity fluctuation caused by vortex shedding was observed inside the tube banks without acoustic resonance. The Strouhal number measured for vortex shedding was 0.15. Acoustic resonances of higher-order modes were generated in this plant. |
| first_indexed | 2024-04-11T17:06:56Z |
| format | Article |
| id | doaj.art-47ad3d45ce2c4d18a460ea2359eae1d8 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-04-11T17:06:56Z |
| publishDate | 2008-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-47ad3d45ce2c4d18a460ea2359eae1d82022-12-22T04:13:01ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582008-09-013680581310.1299/jfst.3.805jfstAcoustic Resonance and Vortex Shedding from Tube Banks of Boiler PlantHiromitsu HAMAKAWA0Hiroto MATSUE1Eiichi NISHIDA2Tohru FUKANO3Department of Mechanical Engineering, Oita UniversityGraduate Student, Oita UniversityDepartment of Mechanical Systems Engineering, Shonan Institute of TechnologyDepartment of Environmental Symbiosis Engineering, Kurume Institute of TechnologyThis paper focuses on the relationship between acoustic resonance and vortex shedding from the tube banks of a boiler plant. We have built a model similar to the actual boiler plant to clarify the characteristics of acoustic resonance phenomena and vortex shedding. The model used in-line tube banks with a small tube pitch ratio. We examined the relationship between the acoustic resonance of the actual plant and that of the model, and measured the sound pressure level, acoustic pressure mode shape, spectrum of velocity fluctuation, and gap velocity. Gap velocity was defined as the mean velocity in the smallest gaps between two neighboring tubes in the transverse direction. As a result, the resonant frequencies and mode shapes of the acoustic resonances in the actual boiler plant agreed well with those in the similar model. We found many peak frequencies in the sound pressure level spectrum when acoustic resonances occurred. The typical Strouhal numbers at the onset velocity of acoustic resonances were about 0.19, 0.26 and 0.52. Periodic velocity fluctuation caused by vortex shedding was observed inside the tube banks without acoustic resonance. The Strouhal number measured for vortex shedding was 0.15. Acoustic resonances of higher-order modes were generated in this plant.https://www.jstage.jst.go.jp/article/jfst/3/6/3_6_805/_pdf/-char/enacoustic resonanceflow induced noisevortexin-line tube bankssimilarityheat exchanger |
| spellingShingle | Hiromitsu HAMAKAWA Hiroto MATSUE Eiichi NISHIDA Tohru FUKANO Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant Journal of Fluid Science and Technology acoustic resonance flow induced noise vortex in-line tube banks similarity heat exchanger |
| title | Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant |
| title_full | Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant |
| title_fullStr | Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant |
| title_full_unstemmed | Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant |
| title_short | Acoustic Resonance and Vortex Shedding from Tube Banks of Boiler Plant |
| title_sort | acoustic resonance and vortex shedding from tube banks of boiler plant |
| topic | acoustic resonance flow induced noise vortex in-line tube banks similarity heat exchanger |
| url | https://www.jstage.jst.go.jp/article/jfst/3/6/3_6_805/_pdf/-char/en |
| work_keys_str_mv | AT hiromitsuhamakawa acousticresonanceandvortexsheddingfromtubebanksofboilerplant AT hirotomatsue acousticresonanceandvortexsheddingfromtubebanksofboilerplant AT eiichinishida acousticresonanceandvortexsheddingfromtubebanksofboilerplant AT tohrufukano acousticresonanceandvortexsheddingfromtubebanksofboilerplant |