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1-17 of 17
Keywords: morison equation
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Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29036-MS
... into standard industry practice (API, DNV and ISO). This is a simple improvement to the original Morison equation (Morison et al. [ 2 ]), which predicts forces using the undisturbed open ocean flow properties. New work shows that unsteady large waves on top of a steady current introduces additional blockage...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1996
Paper Number: OTC-8064-MS
... of the Morison equation which also happens to be linear shows promise for the universal prediction of hydrodynamic forces. 1. Introduction Many types of slender marine structures in the offshore industry are affected by hydrodynamic interaction. This interaction must certainly be considered whenever the level...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6520-MS
.... The calculated forces using Morison equation through the use of experimentally determined inertia and drag coefficients is found to be in good agreement with the meas-ired forces at low KC numbers. INTRODUCTION With the necessity of reducing the capital cost in exploring marginal fields, new offshore structure...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6608-MS
...aTe 6608 Nonlinear and Non-Gaussian Aspects of Morison Equation Induced Fatigue Damage Jin Wang and L.D. Lutes, Texas A&M U. Copyright 1991, Offshore Technology Conference This paper was presented at the 23rd Annual OTC in Houston, Texas, May 6-9,1991. This paper was selected for presentation...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 1988
Paper Number: OTC-5852-MS
... and an analysis of the force records through Morison's equation. INTRODUCTION Hydraulics Research has been engaged for more than 15 years in a continuous program of research into hydrodynamic forces on marine pipelines. The first element of the investigation consisted of field measurements on a pipeline...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5096-MS
... that interaction of the cylinder with its own wake is extremely important. Strong vortex shedding effects throughout all of the experiments were evident. Large transverse forces were observed at Reynolds numbers over 10 6 " The Morison equation proves to be a good model of the forces. Comparisons are made...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4831-MS
... ABSTRACT Laboratory measurements of the total in line forces on a fixed vertical 2-in. diameter cyl1nder in deep-water regular and random waves are given and compared with predictions from the Morison equation. Results show, for regular waves which heights ranging from 2 to 22...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 1983
Paper Number: OTC-4496-MS
... in regular waves, mechanically oscillated in still water, and (J) free to move in regular waves. Thus, different forma of the Morison equation could be compared. The forces on the small Load sensing segment were measured and the coefficients were correlated with Local values of RC and Re. It is found...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 1980
Paper Number: OTC-3799-MS
... in both directions becomes mono-harmonic with a frequency of 2f w . Vortex shedding "lock-in" is shown to produce substantial dynamic amplification of deflection not only in the transverse direction but also in the in-line direction. The Morison equation so widely used in engineering practice to estimate...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 1980
Paper Number: OTC-3762-MS
... compared to values predicted by the Morison equation. The major input parameters required by this equation were the water particle kinematics of velocity and acceleration and the coefficients of drag and inertia. The horizontal velocity fields of the combined wave-current condition and the coefficient...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1978
Paper Number: OTC-3064-MS
... morison equation transfer function wave theory offshore structure force coefficient subsea system design wave coefficient wave force structural member loading otc paper wave height platform hydrodynamic loading cylinder upstream oil & gas regime engineer equation offshore...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 7–10, 1978
Paper Number: OTC-3072-MS
...) presenta- tion of drag, lift, and inertia coefficients that can be used in the Morison equation in combinationwith._ Stokes' third-order wave theory. 217 where Fdim = dimensionless force Fmax = maximum measured force y = -specific weight of water H = wave height L =-wavelength V = volume of model (total...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 1977
Paper Number: OTC-2902-MS
... ABSTRACT A laboratory investigation has been made of the effect of. surface roughness on the force experienced by vertical surface piercing cylinders in waves. It was found that the wave force was increased significantly and a simple analysis using the Morison equation indicated that the drag...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 1975
Paper Number: OTC-2190-MS
.... INTRODUCTION Wave forces on a small tubular structure may be calculated from an em- pirical equation, commonly known as Morison's equation. The Morison equa- tion considers wave force to be composed of two parts -- an inertia term and a drag term -- linearly added together. References and illustrations at end...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–7, 1974
Paper Number: OTC-2042-MS
... that this equation reduces to the inertial term of the Morison equation for small objects (i.e., £l«L). (5) (2) horizontal force component mass coefficient to account for disturbance of flow due to pre- sence of object object dimension perpendicular to direction of wave travel object dimension perpendicular...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 21–23, 1970
Paper Number: OTC-1278-MS
... mass coefficient wave interaction approximate theory coefficient reservoir characterization wave height vertical force coefficient interaction small value morison equation force coefficient velocity potential diffraction effect viscous effect equation free surface diffraction...
Proceedings Papers
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 17–20, 1969
Paper Number: OTC-1005-MS
... force data wave theory inertial coefficient probability curve level 0 higher wave equation elevation reynolds number morison equation wave period parametric analysis coefficient standard deviation upstream oil & gas wave force project ii reservoir characterization drag...