Abstract As marine renewable energy technologies developing, there is a growing need for transportation systems. During offshore operations, deep sea risers can be subjected to excessive environmental loadings, causing operational risks. In this study, hydrodynamic loads, caused by in situ currents, acting on riser under real-world conditions were modelled and examined, with experimental data b...

This study proposed a novel experimental platform to conduct dynamic loading tests of truncated model steel catenary riser (SCR) within the touchdown zone (TDZ). The facilities platform, including soil tank, system, and stirring were introduced in detail. parameters test determined through simulation an situ riser. A pipe was adopted as riser, with its outer diameter equaling that prototype SCR...

Abstract The relationship between microstructure, stress ratio, and fatigue fracture behavior of high-strength steel for flexible marine risers was investigated by microstructure characterization test. characteristic, S-N curve, morphology, crack morphology after quenching tempering treatment cyclic heat treatment, respectively, were evaluated. results revealed that the refined considerably, gr...

There is accelerating interest in composite risers for deepwater applications. Composite risers offer much higher strength to weight ratios over metallic risers but there is less experience of their behavior in deepwater environments. A general review on current developments specific to composite risers highlighting the remaining challenges and the applications, design evolution, state-of-the-a...

the steger and warming flux vector splitting implicit scheme is used to numerically solve two dimensional reynolds averaged navier–stokes (rans) equations governing the vortex induced vibration of a flexible riser laterally supported by a spring and a damper. the k–ε model is used as turbulence model to simulate the turbulent flow in the wake of the riser. to update the new position of the rise...

In this paper the influence of inlet and outlet configurations a pseudo-2D fluidized riser on hydrodynamics (i.e. flow pattern cluster characteristics) are studied. A detailed comparison between experimental data full 3D CFD-DEM simulation results is performed. Solids volume fraction mass flux characterized particle clusters detected in our simulations compared to data. It shown that correct re...