Abstract
The flow field and structural vibrations of two side-by-side cylinders in a uniform cross flow were measured simultaneously in an effort to understand the interference effects of such a flow configuration. A single hot-wire was used to measure the velocity field, while the lateral structural responses were measured on one cylinder only using an optical fibre Bragg grating (FBG) sensor and a laser vibrometer. These measurements were compared with those obtained for a single cylinder. It was found that the fluctuating bending displacement Y measured by the laser vibrometer, when small, is linearly related to the axial strain ε obtained by the FBG sensor. As the cylinder spacing decreases, the strain-displacement relationship remains linear, but the slope changes as a result of interference between the cylinders. When the spacing is reduced to 1.13 cylinder diameter, the two cylinders act like a single structure. Furthermore, a prominent peak in the rms values of ε and Y occurs near the reduced velocity U(r) ~ 10; tripling the peak values measured at U(r) ~ 5. This could be attributed to the combined effects of resonance and interference between the cylinders.
| Original language | English |
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| Title of host publication | Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998 (Volume 2) |
| Editors | MC Thompson, K Hourigan, MC Thompson, K Hourigan |
| Publisher | Monash University |
| Pages | 799-802 |
| Number of pages | 4 |
| ISBN (Print) | 0732620449 |
| Publication status | Published - Dec 1998 |
| Event | Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference - Melbourne, Australia Duration: 13 Dec 1998 → 18 Dec 1998 |
Conference
| Conference | Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference |
|---|---|
| Country/Territory | Australia |
| City | Melbourne |
| Period | 13/12/98 → 18/12/98 |
ASJC Scopus subject areas
- Engineering(all)