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Uvp Measurements of the Flow behind a Rotating Circular Cylinder
| Content Provider | Semantic Scholar |
|---|---|
| Author | Inoue, Yoshihiro Ito, Atsuko Yamashita, Shintaro |
| Copyright Year | 2004 |
| Abstract | Separated flow past a rotating circular cylinder has been investigated by flow visualizations and velocity profile measurements using the ultrasonic Doppler method. Experiments were performed in a free-surface water channel with Red = 800, a Reynolds number larger than the critical Reynolds number of the flow behind a circular cylinder, within a rotational speed ratio range of Uc * = 0 to 6. Flow visualized images were obtained by the dye method and captured with the digital video camera. Fluctuating velocity fields, v (y, t), measured by the UVP monitor were represented in contour maps and analyzed with the POD. Wake patterns are divided into two main categories in terms of the rotational speed ratio; (i) regular vortex street within the lower speed range and (ii) disordered vortex structure within the higher range. There are three subcategories between two main-categories. It is shown that the fluctuation energy within the wake shear layers, and the deflection amount and width of the shear layer are changed with the rotational speed ratio. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.isud-conference.org/proc/split/ISUD-04_143_Inoue.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
