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Keywords: circular cylinder
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27631-MS
... flow attack angles. Validation of C d and St for flow past a circular cylinder show good agreement with literature. Variation of the riser component outer profile and flow attack angle show variation in the drag and lift force experienced as well as the vortex shedding behavior. More accurate Re...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26911-MS
... at high Reynolds number. equation boundary layer mooring system high reynolds number cylinder production logging openfoam circular cylinder coefficient time history transition model flow regime reynolds number upstream oil & gas production monitoring turbulence model subsea system...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-21070-MS
... sea bottom current cylinder plet span upstream oil & gas rms fatigue life plane boundary viv offshore pipeline interaction pipeline span modeling & simulation proximity span circular cylinder reduced velocity OTC 21070 Fluid-Structure Interaction Simulations...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17305-MS
... not exceed the value of 1–1.2 diameters for circular cylinders. VIV is normally associated with tall cylindrical bodies such as risers, tendons, flowlines and other tubular used by the offshore industry. Typical vibration amplitudes for risers reach up to 1 diameter for uniform flow. Among production...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7235-MS
... - -- - -- - - - - - - - - - - - We have treated the hydrodynamic damping problem as a two-dimensional sinusoidal oscillation of a circular cylinder in an infinite viscous, incompressible fluid. The governing parameters have extreme values; we have small Keulegan-Carpenter numbers (KC = UmaxTId ~ 1) and large values of frequency...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6817-MS
... is a review of experimental research on vortex-induced transverse forces on smooth, rigid, fixed and elastically mounted circular cylinders, subjected to a variety of steady and periodic flows. The salient flow and geometric parameters influencing the vortex shedding process and thus the transverse force...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1992
Paper Number: OTC-6815-MS
...) are not in a position to predict the force-transfer coefficients, even for a simple circular cylinder. No three-dimensional finite-difference solution of the Navier-Stokes equations for the flow past a cylinder of finite aspect ratio (with no slip condition on the cylinder and on the bounding end walls) exists...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6518-MS
...OTC 6518 Hydrodynamic Lift and Drag on Rough Circular Cylinders T. Sarpkaya, Naval Postgraduate School This paper was presented at the 23rd Annual OTC in Houston. Texas. May 6-9, 1991. This paper was selected for presentation by the OTC Program Committee following review of information contained...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6606-MS
... Kc numbers there is little time available for the flow-separation to initiate and develop behind a circular cylinder before the flow reversal occurs. This diminishes the chances for the for- mation of wakes on a circular cylinder. Considering the reso- nant oscillation of these large diameter...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–10, 1990
Paper Number: OTC-6407-MS
... of existing jack-ups, when their fitness for use at a specific site is considered. While a large amount of experimental data has been gathered on smooth and rough circular cylinders in planar oscillatory flow and in waves, very little information is available fromtests with jack-up legs in such conditions...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5581-MS
... been smaller yet, to the degree that the moored model squatted in re- sponse to the flow around it. Pearcey, Cash, and Salter /13/ described exper- iments on circular cylinders in wind tunnels in which the value of the drag6 coefficien~ for Rey- nolds numbers between 5 x 10 and 9 x10 were al- most...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5372-MS
... rough circular cylinder circular cylinder harmonically smooth cylinder end plate coefficient reynolds number small cylinder hydrodynamic force rough cylinder drag coefficient cylinder maximum lift coefficient roughness high reynolds number experiment lift force mass coefficient...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5099-MS
...aTC 5099 Measured Fluid Forces on an Accelerated/Decelerated Circular Cylinder by A.A. Bird, consultant, and L.F. Mockros, Northwestern U. Copyright 1986 Offshore Technology Conference This paper was presented at the 18th Annual OTC in Houston, Texas; May 5-8, 1986. The material is subject...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1985
Paper Number: OTC-5007-MS
... to copy is restricted to an abstract of not more than 300 words. ABSTRACT Measurements are presented of forces on a pair of ide.!tical parallel circular cylinders with a smC'oth surface under a steady uniform flow. The drag coeff- icient of the cylinders was found to be a continuous function...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1985
Paper Number: OTC-5033-MS
... plywood models built on a scale 1:66.67 were used. As can be seen in Figure 1, one model is a shallow-draft circular cylinder with a full-scale diameter of 100 meters. The other model is similar to the first one up to the 10-meters waterline. where the waterplane area decreases substantially. 107...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4810-MS
... theory to a second approximation based on the Stokes expansion procedure. This has been attempted by a number of authors for the particular case of a surface piercing vertical circular cylinder, and by Garrison for the general case of a body of arbitrary shape. For the extreme case of steep waves...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1983
Paper Number: OTC-4591-MS
... circular cylinder frequency ABSTRACT This paper describes the drag coefficients of cylinders oscillated in both in-line and transverse directions to a uniform flow. The drag coefficients C D have been obtained experimentally over a wide range of oscillating frequencies, amplitude and flow...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1982
Paper Number: OTC-4227-MS
... Abstract The forces acting on yawed smooth and rough circular cylinders in a sinusoid ally oscillating planar flow have been investigated experimentally and the force transfer coefficients have been evaluated. The results have shown that the so-called "independence principle" does not hold...

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