Low Reynolds number flow over a square cylinder with a detached flat plate
A numerical study of the alteration of a square cylinder wake using a detached downstream thin flat plate is presented. The wake is generated by a uniform flow of Reynolds number 150 based on the side length of the cylinder, D. The sensitivity of the near wake structure to the downstream position of...
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| Format: | Article |
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Elsevier
2012
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| author | Mat Ali, Mohamed Sukri Doolan, Con J. Wheatley, Vincent |
| author_facet | Mat Ali, Mohamed Sukri Doolan, Con J. Wheatley, Vincent |
| author_sort | Mat Ali, Mohamed Sukri |
| collection | ePrints |
| description | A numerical study of the alteration of a square cylinder wake using a detached downstream thin flat plate is presented. The wake is generated by a uniform flow of Reynolds number 150 based on the side length of the cylinder, D. The sensitivity of the near wake structure to the downstream position of the plate is investigated by varying the gap distance (G) along the wake centerline in the range 0=G=7D for a constant plate length of L=D. A critical gap distance is observed to occur at G c˜2.3D that indicates the existence of two flow regimes. Regime I is characterised by vortex formation occurring downstream of the gap while for regime II, formation occurs within the gap. By varying the plate length and gap distance, a condition is found where significant unsteady total lift reduction can occur. The root mean square lift reduction is limited by an unsteady stall process on the plate. |
| first_indexed | 2024-03-05T18:52:24Z |
| format | Article |
| id | utm.eprints-32885 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:52:24Z |
| publishDate | 2012 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | utm.eprints-328852018-11-30T06:31:33Z http://eprints.utm.my/32885/ Low Reynolds number flow over a square cylinder with a detached flat plate Mat Ali, Mohamed Sukri Doolan, Con J. Wheatley, Vincent TJ Mechanical engineering and machinery A numerical study of the alteration of a square cylinder wake using a detached downstream thin flat plate is presented. The wake is generated by a uniform flow of Reynolds number 150 based on the side length of the cylinder, D. The sensitivity of the near wake structure to the downstream position of the plate is investigated by varying the gap distance (G) along the wake centerline in the range 0=G=7D for a constant plate length of L=D. A critical gap distance is observed to occur at G c˜2.3D that indicates the existence of two flow regimes. Regime I is characterised by vortex formation occurring downstream of the gap while for regime II, formation occurs within the gap. By varying the plate length and gap distance, a condition is found where significant unsteady total lift reduction can occur. The root mean square lift reduction is limited by an unsteady stall process on the plate. Elsevier 2012-08 Article PeerReviewed Mat Ali, Mohamed Sukri and Doolan, Con J. and Wheatley, Vincent (2012) Low Reynolds number flow over a square cylinder with a detached flat plate. International Journal of Heat and Fluid Flow, 36 . pp. 133-141. ISSN 0142-727X http://dx.doi.org/10.1016/j.ijheatfluidflow.2012.03.011 DOI:10.1016/j.ijheatfluidflow.2012.03.011 |
| spellingShingle | TJ Mechanical engineering and machinery Mat Ali, Mohamed Sukri Doolan, Con J. Wheatley, Vincent Low Reynolds number flow over a square cylinder with a detached flat plate |
| title | Low Reynolds number flow over a square cylinder with a detached flat plate |
| title_full | Low Reynolds number flow over a square cylinder with a detached flat plate |
| title_fullStr | Low Reynolds number flow over a square cylinder with a detached flat plate |
| title_full_unstemmed | Low Reynolds number flow over a square cylinder with a detached flat plate |
| title_short | Low Reynolds number flow over a square cylinder with a detached flat plate |
| title_sort | low reynolds number flow over a square cylinder with a detached flat plate |
| topic | TJ Mechanical engineering and machinery |
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