Results 31 to 40 of about 1,280 (210)

Riser Dynamic Analysis Using WKB-Based Dynamic Stiffness Method [PDF]

, 2012
Risers are fluid conduits from subsea equipment to surface floating production platforms. The integrity of a riser system plays a very important role in deepwater developments. Riser dynamic analysis is an important part to the system design.
Vandiver, John Kim, Yongming Cheng, J. Kim Vandiver, Cheng, Yongming   +3 more
core   +1 more source

Parametric Analysis of an Energy-Harvesting Device for a Riser Based on Vortex-Induced Vibrations

Energies, 2020
An energy-harvesting device for a riser based on vortex-induced vibration is proposed to overcome the power supply problem for a marine deep-water riser-monitoring device.
Xu Bai, Chuanyu Han, Yong Cheng
doaj   +1 more source

Reduced-order modelling of vortex-induced vibration of catenary riser

, 2009
A new reduced-order model capable of analyzing the vortex-induced vibration of catenary riser in the ocean current has been developed. This semi analytical-numerical approach is versatile and allows for a significant reduction in computational effort for
O' Brien, P., Patrick O’Brien, Narakorn Srinil, Marian Wiercigroch, Srinil, N., Wiercigroch, M.   +5 more
core   +1 more source

Numerical investigation on VIV suppression of marine riser with triangle groove strips attached on its surface

International Journal of Naval Architecture and Ocean Engineering, 2019
The effects of Triangle Groove Strips (TGS) on Vortex-induced Vibration (VIV) suppression of marine riser are numerically investigated using Computational Fluid Dynamics (CFD) method. The range of Reynolds number in simulations is 4.0 × 104 < Re 
Wei Wang, Baowei Song, Zhaoyong Mao, Wenlong Tian, Tingying Zhang   +4 more
doaj   +1 more source

Flow-induced force caused by gas-liquid two-phase flow in marine riser system: experimental study and computing model

You-qi chuyun, 2021
In the field of offshore oil and gas development, the pipeline transmission pressure and flow velocity increase, and the vibration caused by the internal flow of a pipeline becomes one of the important items for flow safety guarantee.
Zhaoyang HE, Limin HE, Haixiao LIU, Dan WANG, Yaxin ZHANG   +4 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Fatigue damage assessment of offshore riser subjected to vortex-induced vibrations by SHEAR7

International Journal of Naval Architecture and Ocean Engineering, 2022
Marine risers are a critical component in transporting the produced hydrocarbons from the seabed to the topside facility and vice versa. These risers are subjected to VIV when encountered with ocean currents, leading to the accumulation of fatigue damage,
Malakonda Reddy Lekkala, Mohamed Latheef, Jae Hwan Jung, Young Tae Kim, Do Kyun Kim   +4 more
doaj   +1 more source

Low Cycle Repetitive Loading of Ti‐6Al‐4V‐Epoxy Composite Lattice Structures for Enhanced Energy Dissipation and Damage Tolerance

Advanced Engineering Materials, EarlyView.
Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon, Jordan Noronha, Justin Dirrenberger, Andrey Molotnikov   +3 more
wiley   +1 more source

Lateral Dynamic Characteristics of Riser Under Wave-Current Load During Running and Installation

Shiyou jixie, 2023
In order to study the lateral dynamic displacement and lower bending moment variation of the marine riser during running and installation, the lateral dynamic load equation and wave-current load equation were established.Based on the analysis of grid ...
Sun Qiaolei, Liu Yuwei, Xia Le, Feng Ding, Wang Peng, Zhang Hong   +5 more
doaj  

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş, Mehmet Emin Demir, Sercan Özpınar   +2 more
wiley   +1 more source