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Keywords: vertical cylinder
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Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15288-MS
... of the experimental programme carried out at MARIN and Ecole Centrale de Nantes and some typical results for a vertical cylinder and an FPSO in regular waves using PIV techniques for quantitative flow measurement. Preliminary results from CFD validation studies are provided, and reviewed. Results are also provided...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7190-MS
... is improved. In order to gain more detailed insight in the mechanisms of the viscous contribution to the drift force tests were carried out with single fixed vertical cylinder in regular waves. The results of tests confirm that in conditions of waves without current the major part of the viscous contribution...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6520-MS
... zero and then falls sharply as KC number increases within a small range. Inertia and drag coefficients are found to be strongly affected as the cylinders aspect ratios vary. Inertia and drag coefficients are found to be higher for vertical cylinders than those of corresponding horizontal cylinders...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6592-MS
... into unconscious trade-offs of drag and inertia. If a pure drag force (C = 0.0) on the full bay is schematized by the force on a single vertical cylinder, then it is found that the equivalent C for that cylinder is no longer zero; its vafue will obviously depend upon the schematization details. In a truss...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6606-MS
... a device designed to induce flow-separation around a vertical column at low Kc numbers. The results of two experimental investigations are presented in this paper. In the first experiment, in-line forces on a O.3m diameter vertical cylinder were measured without and with the attachment of the flow...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1990
Paper Number: OTC-6406-MS
... vertical cylinder otc 6406 mass coefficient heave upstream oil & gas natural frequency oscillation tlp phase angle caisson cylinder natural period OTC 6406 Added Mass and Damping of a TLP Column Model S.K. Chakrabarti, Chicago Bridge & Iron Technical Services Co., and S.Y. Hanna, Conoco...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1990
Paper Number: OTC-6366-MS
... characterized by individual vertical cylinders in a steady current are described. As the vast majority of the available data are concerned with this subject, it is an appropriate subject for concentration. Furthermore, once these P cesses are well described by a mathematical relationsLp, the results can...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5102-MS
...OTC 5102 Dynamic Pressures Around a Vertical Cylinder in Waves by S.K. Chakrabarti,A.R. Libby,and D.J. Kompare, CB/ hdustries hc. Copyright 1986 Offshore Technology Confe~eTce- This paper was presented at the 18ih Annual O.TC in Houston, Texas, May 5-8, 1986. W materiel is subiect to correction...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4814-MS
... by the author. Permission to copy is restricted to an abstract of not more than 300 words. Abstract A large vertical cylinder with a deep draft which is mOD red with linear springs in waves is analyzed both theoretically and experimentally. The theory is based on the second-order diffraction-radiation problem...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4831-MS
... approximation is attributed to a decreased dependence of the coefficients on dimensionless flow parameters as a result of the circular particle motions and large kinematic gradients of the deep-water waves. INTRODUCTION The in-line force exerted on a fixed vertical cylinder by water surface waves is if mail...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 1979
Paper Number: OTC-3597-MS
... arrangements; a vertical cylinder and a horizontal cylinder in progressive waves. The physical differences between the flows are explored and the results are compared to previous planar harmonic flow measurements. It was found that modifications to the usual Morison approach are required to adequately account...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1978
Paper Number: OTC-3066-MS
... velocity and acceleration normal to the element, D is the element diameter and P is the mass density of water. As shown in Appendix I, the maximum total horizontal forces on a vertical cylinder during a wave cycle are (Mathematical Equation Available in Full Paper) which are obtained by integrating (1...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1978
Paper Number: OTC-3067-MS
... proceedings hogben maximum force nterfereflce effect correspond prediction experiment vertical cylinder boundary condition circular cylinder orientation body surface wave height application wave force offshore structure geometry cylinder computer prediction equation OTC...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 28–May 1, 1973
Paper Number: OTC-1818-MS
... of this member is found in the construction of drilling platforms. A vertical cylinder whose diameter is small compared to the wave length (d/L < 0.1) may be treated by Morison's approach (8). The equation for the horizontal wave force proposed by Morison, et al (8) is divided into two parts inertial and drag...