THE FLOW-INDUCED VIBRATION OF A FLEXIBLE STRIP HANGING VERTICALLY IN A PARALLEL FLOW PART 1: TEMPORAL AEROELASTIC INSTABILITY
✍ Scribed by Y. YADYKIN; V. TENETOV; D. LEVIN
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 432 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0889-9746
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✦ Synopsis
The e!ect of several parameters in a #uid}strip system are studied for linear/nonlinear models in detail. Such parameters are: the number of modes in the Galerkin discretization, the length of the strip, and the #ow velocity. The present simulation clearly shows that when nonlinear forces are considered the response approaches a #utter-type limit cycle at supercritical #ow speeds. The Reynolds number at which the strip begins to oscillate is about 10}10. With a further increase of the #ow velocity the strip oscillates regularly. At higher #ow velocities the oscillation becomes violent and irregular. The amplitude, frequency and drag coe$cient at the limit cycle are presented as functions of the #ow velocity for a given strip. The numerical predictions are in qualitative agreement with previous experimental data.