Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity
This paper presents results of an experimental study on incompressible turbulent flow over a rectangular cavity. The experiment was carried out to clarify the strength and three-dimensional nature of cavity oscillations for fully turbulent inflow. Particle image velocimetry (PIV) and fluctuating pre...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2009-11-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_746/_pdf/-char/en |
| _version_ | 1798020956605644800 |
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| author | Takayuki MORI Kenji NAGANUMA |
| author_facet | Takayuki MORI Kenji NAGANUMA |
| author_sort | Takayuki MORI |
| collection | DOAJ |
| description | This paper presents results of an experimental study on incompressible turbulent flow over a rectangular cavity. The experiment was carried out to clarify the strength and three-dimensional nature of cavity oscillations for fully turbulent inflow. Particle image velocimetry (PIV) and fluctuating pressure measurements were made in a closed, re-circulating water tunnel for cavity length-depth ratio from L/D=1 to 4 at a momentum thickness based Reynolds number, Reθ=8,300. Measured power spectra of pressure fluctuations show dominant frequencies with broad peak width indicating the absence of resonant oscillations. Pressure fluctuations at two spanwise separated locations are well correlated at the frequency range in which dominant peaks are found. Instantaneous flow fields reveal strong three-dimensional distortions. Although formation and passage of turbulent eddies are observed in the instantaneous x (streamwise)-y (vertical) plane flow field, instantaneous x-z (spanwise) plane flow fields show strong spanwise variations. |
| first_indexed | 2024-04-11T17:06:08Z |
| format | Article |
| id | doaj.art-b271b5c7e4c34e1f95a092957bc47270 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-04-11T17:06:08Z |
| publishDate | 2009-11-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-b271b5c7e4c34e1f95a092957bc472702022-12-22T04:13:01ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582009-11-014374675710.1299/jfst.4.746jfstExperimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular CavityTakayuki MORI0Kenji NAGANUMA1Naval Systems Research Center, TRDI/ Ministry of Defense, JAPANNaval Systems Research Center, TRDI/ Ministry of Defense, JAPANThis paper presents results of an experimental study on incompressible turbulent flow over a rectangular cavity. The experiment was carried out to clarify the strength and three-dimensional nature of cavity oscillations for fully turbulent inflow. Particle image velocimetry (PIV) and fluctuating pressure measurements were made in a closed, re-circulating water tunnel for cavity length-depth ratio from L/D=1 to 4 at a momentum thickness based Reynolds number, Reθ=8,300. Measured power spectra of pressure fluctuations show dominant frequencies with broad peak width indicating the absence of resonant oscillations. Pressure fluctuations at two spanwise separated locations are well correlated at the frequency range in which dominant peaks are found. Instantaneous flow fields reveal strong three-dimensional distortions. Although formation and passage of turbulent eddies are observed in the instantaneous x (streamwise)-y (vertical) plane flow field, instantaneous x-z (spanwise) plane flow fields show strong spanwise variations.https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_746/_pdf/-char/enturbulent flowcavity flowthree-dimensional flow |
| spellingShingle | Takayuki MORI Kenji NAGANUMA Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity Journal of Fluid Science and Technology turbulent flow cavity flow three-dimensional flow |
| title | Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity |
| title_full | Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity |
| title_fullStr | Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity |
| title_full_unstemmed | Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity |
| title_short | Experimental Investigation of the Three-Dimensional Nature of Turbulent Flow over a Rectangular Cavity |
| title_sort | experimental investigation of the three dimensional nature of turbulent flow over a rectangular cavity |
| topic | turbulent flow cavity flow three-dimensional flow |
| url | https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_746/_pdf/-char/en |
| work_keys_str_mv | AT takayukimori experimentalinvestigationofthethreedimensionalnatureofturbulentflowoverarectangularcavity AT kenjinaganuma experimentalinvestigationofthethreedimensionalnatureofturbulentflowoverarectangularcavity |