Suction inlet vortex investigation at low Reynolds numbers
Under certain flow conditions, when an inlet is aspirated in close proximity to a solid boundary, a vortex will form between the surface and the inlet. The formation and ingestion of such vortices could potentially lead to inefficient fluid suction by pumps or catastrophic damages in high-speed jet...
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| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Online Access: | https://hdl.handle.net/10356/81513 http://hdl.handle.net/10220/40845 https://unisa.pure.elsevier.com/en/publications/suction-inlet-vortex-investigation-at-low-reynolds-numbers |
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| author | Ho, Wei Hua Bin Idris, Omar Faruq New, Tze How |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ho, Wei Hua Bin Idris, Omar Faruq New, Tze How |
| author_sort | Ho, Wei Hua |
| collection | NTU |
| description | Under certain flow conditions, when an inlet is aspirated in close proximity to a solid boundary, a vortex will form between the surface and the inlet. The formation and ingestion of such vortices could potentially lead to inefficient fluid suction by pumps or catastrophic damages in high-speed jet engines. Previous studies established the basic relationship of such inlet vortices formation threshold and geometry and flow conditions, though they were typically considered at significantly high Reynolds numbers. It remains unclear if there is a lower limit to the Reynolds number at which this phenomenon ceases to exist. This study shows that this phenomenon exists even at low Reynolds number of Re = 160. In particular, the results are generally in agreement with the previously established relationships at much higher Reynolds numbers but certain correlations are not as significant. This suggests that formation of inlet vortices may be less sensitive to Reynolds numbers effects than previously thought. |
| first_indexed | 2024-10-01T05:48:15Z |
| format | Journal Article |
| id | ntu-10356/81513 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:48:15Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/815132023-03-04T17:13:49Z Suction inlet vortex investigation at low Reynolds numbers Ho, Wei Hua Bin Idris, Omar Faruq New, Tze How School of Mechanical and Aerospace Engineering Inlet vortex Low Reynolds numbers Under certain flow conditions, when an inlet is aspirated in close proximity to a solid boundary, a vortex will form between the surface and the inlet. The formation and ingestion of such vortices could potentially lead to inefficient fluid suction by pumps or catastrophic damages in high-speed jet engines. Previous studies established the basic relationship of such inlet vortices formation threshold and geometry and flow conditions, though they were typically considered at significantly high Reynolds numbers. It remains unclear if there is a lower limit to the Reynolds number at which this phenomenon ceases to exist. This study shows that this phenomenon exists even at low Reynolds number of Re = 160. In particular, the results are generally in agreement with the previously established relationships at much higher Reynolds numbers but certain correlations are not as significant. This suggests that formation of inlet vortices may be less sensitive to Reynolds numbers effects than previously thought. Published version 2016-06-29T08:44:18Z 2019-12-06T14:32:41Z 2016-06-29T08:44:18Z 2019-12-06T14:32:41Z 2015 Journal Article Ho, W. H., Bin Idris, O. F., & New, T. H. (2015). Suction inlet vortex investigation at low Reynolds numbers. Transactions of the Canadian Society for Mechanical Engineering, 39(1), 115-123. 0315-8977 https://hdl.handle.net/10356/81513 http://hdl.handle.net/10220/40845 https://unisa.pure.elsevier.com/en/publications/suction-inlet-vortex-investigation-at-low-reynolds-numbers en Transactions of the Canadian Society for Mechanical Engineering © 2015 The Canadian Society for Mechanical Engineering. This paper was published in Transactions of the Canadian Society for Mechanical Engineeringand is made available as an electronic reprint (preprint) with permission of The Canadian Society for Mechanical Engineering. The published version is available at: [https://unisa.pure.elsevier.com/en/publications/suction-inlet-vortex-investigation-at-low-reynolds-numbers]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 9 p. application/pdf |
| spellingShingle | Inlet vortex Low Reynolds numbers Ho, Wei Hua Bin Idris, Omar Faruq New, Tze How Suction inlet vortex investigation at low Reynolds numbers |
| title | Suction inlet vortex investigation at low Reynolds numbers |
| title_full | Suction inlet vortex investigation at low Reynolds numbers |
| title_fullStr | Suction inlet vortex investigation at low Reynolds numbers |
| title_full_unstemmed | Suction inlet vortex investigation at low Reynolds numbers |
| title_short | Suction inlet vortex investigation at low Reynolds numbers |
| title_sort | suction inlet vortex investigation at low reynolds numbers |
| topic | Inlet vortex Low Reynolds numbers |
| url | https://hdl.handle.net/10356/81513 http://hdl.handle.net/10220/40845 https://unisa.pure.elsevier.com/en/publications/suction-inlet-vortex-investigation-at-low-reynolds-numbers |
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