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1-18 of 18
Keywords: internal flow
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Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-383
... ABSTRACT The cantilevered pipe is a novel and most challenging device in the floating structure of deep-sea mining, and is mainly used as a channel for transporting seabed ore bodies. The internal flow may cause the instability of the cantilevered pipe, which may lead to the failure of mining...
Proceedings Papers
Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3227
... Abstract Internal flow induced vibration (FIV) is regarded as a potential threat to safe operation of subsea rigid tie-in spools with significant freespanning and exposed to turbulent multiphase internal flow. Common industry practice of assessing FIV is to apply the conservative likelihood...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3223
... ABSTRACT Vortex-induced vibration (VIV) of a riser in consideration of both internal and external flows is numerically studied based on the in-house CFD solver viv-FOAM-SJTU. The main objective of the study is to investigate effects of the internal flow on VIV responses of the riser, when...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-145
... ABSTRACT This paper studies the effects of internal fluid on the stability of parametric vibration of a top-tensioned riser (TTR), where the effects of internal flow on the parametric instability charts are analyzed. Results show that both the internal flow density (mass per unit length...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-158
... ABSTRACT Nonlinear dynamic vibration equation of flexible riser conveying fluid is established based on the theory of slender rod and considering the internal flow effect. With Hermitian interpolation function, all the vibration equations are discreted. The static analysis of flexible riser...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-701
... ABSTRACT Risers used for deep sea mining will be subjected to vortex-induced vibrations (VIV) caused by ocean currents. The internal flow, consisting of e.g. mineral ore and water, will have a non-uniform density. This traveling density wave may influence the dynamic response of the riser...
Proceedings Papers
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-276
... analyses highlighting the effects of an end-mass, internal flow and nozzle-induced tension are undertaken. stappenbelt vibration il direction pipe upstream oil & gas fluid struct vortex-induced vibration simulation cf direction experimental data internal flow païdoussis coefficient...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-212
... Effects of Fully Developed Turbulent Internal Flow on Marine Risers Dynamics Stefanos A. Katifeoglou, Ioannis K. Chatjigeorgiou, Spyros A. Mavrakos School of Naval Architecture and Marine Engineering, Division of Marine Structures, National Technical University of Athens Zografos Campus, Athens...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-218
... Dynamic Effect of Internal Flow on Curved Pipe Zheng-Shou Chen1,2 1 Department of Naval Architecture and Civil Engineering, Zhejiang Ocean University, Zhoushan, China 2 State Key laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, China Wu-Joan Kim3 3 Department of Ocean...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-107
... is capable of giving acceptable estimation to VIV problems. As a meaningful application to engineering problems, some tentative simulation cases which are difficult to carry out in experiment, such as a flexible pipe with internal flow and multi-assembled pipes, have been successfully carried out...
Proceedings Papers
Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-088
..., 1987; Jauvtis and Williamson, 2004). experiment internal fluid practical riser similarity theory location 3 riser model num cross-flow vibration internal flow amplitude spectrum upstream oil & gas vortex-induced vibration current speed experimental study riser wave height...
Proceedings Papers
Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-158
... configuration internal flow axial deformation strain energy marine riser deformation slenderness ratio international journal static analysis offshore rigidity riser variational approach chucheepsakul artificial intelligence formulation virtual work LARGE STRAIN STATIC ANALYSIS OF MARINE...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-158
... to demonstrate this influence for the case of steady transporting state. INTRODUCTION The influence of internal flow on the dynamic behavior and stability of pipes has been studied extensively for more than three decades. The research work related to vibration of straight and curved pipes can be found...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-325
... to inline current. Galerkin's finite element approximation is implemented to derive the matrix equation of equilibrium. It is found that the effect of internal flow on vibration due to vortex shedding can be reduced by the increase of top tensions. However, careful consideration has to be given, in design...
Proceedings Papers
Paper presented at the The Fifth International Offshore and Polar Engineering Conference, June 11–16, 1995
Paper Number: ISOPE-I-95-088
... ABSTRACT: The periodic internal flow superimposed to the mean flow in a vertical pipe and the corresponding shear stress are modeled In the range of the axial oscillatory frequency of the pipe. Effect of the periodic flow on the shear stress in the responses of threedimensional (3-D...
Proceedings Papers
Paper presented at the The Fourth International Offshore and Polar Engineering Conference, April 10–15, 1994
Paper Number: ISOPE-I-94-121
..., the riser is essentially a pipe conveying internal flow during production. One of the restrictlons in earlier formulations of the marine-riser was the exclusion of shear effects which follows from the assumption Inherent In the Euler beam theory (Brouwers, 1982, Chakrabarti et. aI., 1982, Chung et. ai, 1981...
Proceedings Papers
Paper presented at the The Fourth International Offshore and Polar Engineering Conference, April 10–15, 1994
Paper Number: ISOPE-I-94-126
... ABSTRACT Fluid conveying pipes such as risers will be influenced by internal and external fluid pressures, and it is well known that these effects can be covered by use of a so called effective axial tension. In this paper it is shown that the centrifugal forces from the internal flow can...
Proceedings Papers
Paper presented at the The Second International Offshore and Polar Engineering Conference, June 14–19, 1992
Paper Number: ISOPE-I-92-141
... in conjunction with the earlier paper. arclength different wave curvature correction horizontal projection flexible riser magnitude envelope pipe riser displacement internal flow patel time history geometry tensile force loading pipe length Proceedings of the Second (1992...