Abstract
The flow passing through a sharp-edged orifice is studied using two experimental techniques over a pipe Reynolds number range of 4000 to 27000. The flow separates at the orifice inlet and is accelerated through its hole in the form of a confined jet. For a given orifice, the mean reattachment length is found to remain fairly independent of the inflow Reynolds number. Velocity and pressure fluctuations attain peak values in regions lying upstream of the mean reattachment point. Under the conditions tested, the orifice jet shows a low frequency flapping motion which was observed to occur at a Strouhal number 0:02 based on the orifice jet velocity and the difference in internal diameters of the pipe and orifice.
| Original language | English |
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| Title of host publication | FIV 2016: Proceedings of the 11th International Conference on Flow-Induced Vibrations |
| Subtitle of host publication | The Hague, The Netherlands |
| Number of pages | 7 |
| Publication status | Published - 2016 |
| Event | 11th International Conference on Flow-Induced Vibrations - New Babylon Conference Center, The Hague, Netherlands Duration: 4 Jul 2016 → 6 Jul 2016 Conference number: 11 http://fiv2016.com |
Conference
| Conference | 11th International Conference on Flow-Induced Vibrations |
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| Abbreviated title | FIV2016 |
| Country/Territory | Netherlands |
| City | The Hague |
| Period | 4/07/16 → 6/07/16 |
| Internet address |