| Autor: |
John R. Chaplin, Peter W. Bearman, F.J. Huera Huarte |
| Rok vydání: |
2006 |
| Předmět: |
|
| Zdroj: |
Volume 9: 6th FSI, AE and FIV and N Symposium. |
| DOI: |
10.1115/pvp2006-icpvt-11-93896 |
| Popis: |
Distributions of the fluid forces acting along a long flexible circular cylinder free to respond in-line and transverse to a stepped current are presented. Forces are calculated using a finite element model of the cylinder with measured responses providing the input. The length to diameter ratio of the model used was 469, the mass ratio was 3 and the Reynolds number could be varied up to maximum value of approximately 2.6 · 104. Fluid force coefficients for two cases are presented: in the first, the dominant modes are the 2nd cross-flow and the 4th in line. For the second case the leading modes are the 7th and 12th respectively. In general, transverse force coefficients and in-line drag coefficients are found to be larger than those measured for short sections of cylinder undergoing free and forced one and two-dimensional motions. It is anticipated that the results will be of value to developers of vortex-induced vibration prediction methods. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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