Abstract
The hydrodynamic forces acting on a circular cylinder and a rectangular cylinder undergoing slow drift oscillation in regular waves were investigated experimentally and numerically. Forced oscillation tests with low frequency and large amplitude in regular waves and forced two-harmonic oscillation with combined low and high frequencies were carried out in the experimental study. In the numerical study a finite-difference method was used to simulate viscous flow around a two-dimensional oscillating cylinder. The results of experiments showed that a horizontal rectangular cylinder oscillating slowly in waves has much higher damping coefficients than one oscillating in two-harmonic mode, while the numerical study indicated that such differences in the damping coefficient arise partly from the different effects of one-direction harmonic flow and rotating flow on the vortex shedding caused by the slow drift oscillation.
| Original language | English |
|---|---|
| Pages (from-to) | 105-113 |
| Number of pages | 9 |
| Journal | Journal of Marine Science and Technology |
| Volume | 1 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1996 |
All Science Journal Classification (ASJC) codes
- Oceanography
- Ocean Engineering
- Mechanics of Materials
- Mechanical Engineering