| Author(s): |
Franzini, Guilherme R.
[1]
;
Goncalves, Rodolfo T.
[2]
;
Meneghini, Julio R.
[1]
;
Fujarra, Andre L. C.
[2]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Escola Politecn, Fluids & Dynam Res Grp NDF, Sao Paulo - Brazil
[2] Univ Sao Paulo, Escola Politecn, Numer Offshore Tank TPN, Sao Paulo - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING; v. 24, n. 2, p. 90-97, JUN 2014. |
| Web of Science Citations: | 3 |
| Abstract | |
Experiments with stationary and yawed cylinders were carried out at a recirculating water channel facility and aimed to study the effects of the inclination in the force coefficients and in the vortex-shedding frequency. The cylinders were inclined at 0 (non-yawed case), 10, 20, 30, and 45 degrees. Force coefficients and the Strouhal number were evaluated by using the Independence Principle (IF), which states a dependence of the flow characteristics only on the component of velocity normal to the cylinder axis. The experimental results showed that when the cylinder was yawed at 45 degrees, there was no regular vortex-shedding regime. A new result is the fact that the lift force spectra, as well as the mean drag coefficient, are different if the cylinder is yawed in upstream or downstream orientation. This difference is associated with the asymmetrical end conditions of the cylinder. (AU) | |
| FAPESP's process: | 08/00688-4 - Investigation on VIV phenomenon of flexible cylinders |
| Grantee: | Guilherme Rosa Franzini |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 13/09802-2 - Investigation on the ow around yawed cylinders with low aspect ratio, focusing on the VIM (vortex-induced motion) of floating platforms |
| Grantee: | Guilherme Rosa Franzini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |