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Keywords: drag coefficient
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30814-MS
... performance interaction critical location cross-section slender offshore structure upstream oil & gas offshore structure drag coefficient mooring system fatigue damage DNV GL . DNVGL-RP-C203 . Fatigue Design of Offshore Steel Structure, December 2019 . Vijayaraghavan , V...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29239-MS
... correlation background current riser 3 dataset drag coefficient riser response viv response Constantinides , Y. and Oakley Jr. , O.H. 2008 . Assessment of Empirical VIV Analysis Tools and Benchmark with Experiments . Presented at the 27th International Conference on Offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28771-MS
... & gas offshore structure simulation wind tunnel test estimation drag coefficient fpso boundary layer reynolds number experiment current load floating production system cfd result shear component offshore technology conference coefficient velocity profile subsea system Presentation...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28813-MS
... for the fairing and riser system and confirmed low drag coefficient (0.4) in Malikai environment. Experiments verified it further. The second part of the study was focussed on investigating VIM of TLP and TAD. The CFD simulations were first carried out to validate the motion of TLP at the lab-scale...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27528-MS
... coupled with analytical methods to obtain key characteristic parameters associated with an oscillating BOP stack. The analysis shows that the steady-state drag coefficient significantly under predicts the drag coefficient for an oscillating BOP stack. The drag coefficient of an oscillating BOP stack...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26874-MS
.... These drag coefficients could be used in conventional calculations for overturning moment analysis. With that goal in mind, no wind profile was applied; the entire SE MODU was exposed to a constant wind velocity. All structures were included in the model to capture any aerodynamic interactions. The forces...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25244-MS
... that the provisions of API RP 2MET do not model the hurricane boundary layer well is that the models were developed using North Sea data, coupled with an assumption that the surface drag coefficient increases with wind speed. The net result is that at high wind speeds the API RP 2MET relations yield a mean velocity...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24262-MS
... wind load values or perform wind tunnel testing to better understand the loads on the structure. BP elected to perform wind tunnel testing. wind load bare derrick upstream oil & gas test data coefficient wind wall wind tunnel data otc 24262 drag coefficient setback square derrick...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24207-MS
... stabilized units such as TLPs and Semi-submersibles [18], though not as significant as Spars. spar vortex amplitude test program variation current profile reynolds number turbulence coefficient subsea system vim flow speed drag coefficient upstream oil & gas hull fpso vim response...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23003-MS
... acceleration (9.81 m/s2), d the particle diameter in m and CD the drag coefficient. CD is a function of the particle Reynolds number Rep. For a sphere at high Rep, it holds CD 0.44. For a sand grain like shape it holds CD 0.9. 4·( )· · 3· · = s f ts f D g d C w (2.1) The (terminal) settling...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21680-MS
... oil & gas operation otc 21680 crane wire seastate winch speed knowledge management subsea template structural design lesson learnt criteria crane subsea structure coefficient template subsea system installation simulation drag coefficient installation criteria lifting analysis...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21670-MS
... resonant dynamic variation in hook load. Predictions of this resonant response are very sensitive to assumptions about damping. The use of drag coefficients based on steady flow can significantly underestimate the amount of damping that occurs as the BOP stack oscillates vertically, especially for small...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2009
Paper Number: OTC-19881-MS
... should be of interest to offshore engineers and project managers involved in platform, mooring and riser design as well as project execution, as it discusses some of the latest developments in VIV suppression. otc 19881 coverage density drag coefficient helical strake test result upstream...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19161-MS
... Number of 1.4x105, VIV amplitude was reduced to ~ 0.02D, and drag coefficient to 1.12. High frequency content was removed from VIV response, thereby ameliorating potential fatigue. Tests at close to full-scale Reynolds Number proved that the VT is simple to handle, and can simultaneously suppress VIV...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19289-MS
... cylinder upstream oil & gas contact load hydrodynamic test lift coefficient installation roller test strake drag coefficient otc 19289 coefficient vertical oscillation bare pipe polyethylene strake reynolds number deformation pipe helical strake OTC 19289 Effectiveness...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19173-MS
... and formulation drilling fluid chemistry upstream oil & gas slurry flow reynolds number submarine debris flow impact drag coefficient drilling fluids and materials impact force pipeline OTC 19173 Submarine Debris Flow Impact on Pipelines: Drag Forces, Mitigation, and Control Arash Zakeri, Kaare...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19377-MS
... shape; The shape of the tail (pointed or flat with varying possible widths); The curvature of the two sides of the fairing; The presence of a stabilizer fin; The geometry of the stabilizer fin. reynolds number in-line rms disp stabilizer fin pipe drag coefficient chord...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18973-MS
... contribute to the overall drag of the riser or drill string and must be carried by the floating platform and its mooring or positioning system. lift coefficient drag coefficient viv response amplitude ratio amplitude reynolds number upstream oil & gas frequency riser pipe experiment...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18646-MS
... riser andy westlake otc 18646 riser angle angle 7 drag coefficient flex joint angle westlake operability operation kalyan uppu otc 18646 limitation upstream oil & gas Copyright 2007, Offshore Technology Conference This paper was prepared for presentation at the 2007 Offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17383-MS
... was recorded with twenty four evenly spaced internal tri-axial accelerometers. Observed reduced velocity and RMS displacement response levels are reported. Mean drag coefficients and hydrodynamic damping derived from measured data are compared to calculated values from formulas commonly used in engineering...

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