The flow configurations around and the forces acting on a
circular cylinder with its axis parallel to a nearby plane boundary
and subjected to a uniform flow were investigated. The flow conditions,
which were perpendicular to the cylinder axis and parallel to
the plane boundary were investigated experimentally and theoretically....
An experimental study was conducted to determine the hydrodynamic
forces on smooth and roughened circular cylinders as
influenced by a nearby plane boundary. The ambient flow was perpendicular
to the cylinder and parallel to the boundary. Measurements
were taken in a water channel and a wind tunnel to obtain the...
Hydrodynamic forces on a cylinder oscillating horizontally
underwater with its axis perpendicular to the motion
were measured at the Oregon State University Wave Research
Facility. The cylinder had an outer diameter of 12 inches
and a length of 12 feet. For the data presented herein, the
maximum displacement of the...
Random waves are often expressed as a mathematical superposition
of an infinite number of sinusoidal components. The mean square spectral
density of the water surface elevation is often called the wave spectrum.
The zero upcrossing wave heights usually have a Rayleigh probability
distribution. However, the design wave concept is still...
By assuming the linear superposition principle to be valid, the
hydrodynamic forces on a horizontal cylinder under waves and current
are examined. In this study, towing a cylinder in waves is used to
simulate a cylinder under waves and current. The experimental
technique is proved valid through theoretical considerations and...
The in-line force power spectrum is predicted by the frequency domain maximum force coefficient [C[subscript μn](z,f[subscript n])] vs. Keulegan-Carpenter number [K[subscript n] (z,f[subscript n])] relationship. The frequency domain Keulegan- Carpenter number is defined as the velocity from the amplitude spectrum at f divided by the respective frequency and diameter of...