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CFD Simulation of Vortex Induced Vibration for FRP Composite Riser with Different Modeling Methods

1
School of Civil and Architectural Engineering, Shandong University of Technology, Zibo 255000, China
2
School of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, Champaign, IL 61801-2352, USA
3
School of Engineering and Information Technology, University of New South Wales Canberra, Campbell, ACT 2600, Australia
4
Shandong Longquan Pipeline Engineering Share Co., Ltd., Zibo 255200, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2018, 8(5), 684; https://doi.org/10.3390/app8050684
Received: 18 March 2018 / Revised: 18 April 2018 / Accepted: 24 April 2018 / Published: 27 April 2018
(This article belongs to the Section Materials)
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Abstract

Steel risers are widely used in offshore oil and gas industry. However, the production capacity and depths are limited due to their extreme weight and poor fatigue and corrosion resistance. Nowadays, it is confirmed that fiber reinforced polymer (FRP) composite risers have apparent advantages over steel risers. However, the study of vortex induced vibration (VIV) for composite risers is rarely involved. Three different risers (one steel riser and two composite risers) were compared for their VIV characteristics. The effects of 2D and 3D models and fluid–structure interaction (FSI) were considered. The models of composite risers are established by effective modulus method (EMM) and layered-structure method (LSM). It is found that 2D model are only suitable for ideal condition, while, for real situation, 3D model with FSI has to be considered. The results show that the displacements of the FRP composite risers are significantly larger than those of the steel riser, while the stresses are reversed. In addition, the distributions of the displacements and stresses depend on the geometries, material properties, top-tension force, constraints, etc. In addition, it is obvious that EMM are suitable to study the global working condition while LSM can be utilized to obtain the results in every single composite layer. View Full-Text
Keywords: FRP composite riser; vortex-induced vibration; coupled fluid–structure interaction; CFD simulation FRP composite riser; vortex-induced vibration; coupled fluid–structure interaction; CFD simulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, C.; Sun, M.; Shankar, K.; Xing, S.; Zhang, L. CFD Simulation of Vortex Induced Vibration for FRP Composite Riser with Different Modeling Methods. Appl. Sci. 2018, 8, 684.

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