Orcaflex flexible riser
The wave spectra will be investigated based on location. Irregular waves are taken into account for the dynamic analysis.
ORCAFLEX FLEXIBLE RISER SOFTWARE
Modeling and Dynamic analysis will be performed by using FE software OrcaFlex. Static and dynamic design and analysis, taking FSO motions and hydrodynamics into account and checking against relevant design codes.
Presenting relevant input data for designing the risers. A Simplified Procedure to Assess the Fatigue-Life of Flexible Risers.
ORCAFLEX FLEXIBLE RISER PDF
ORCAFLEX FLEXIBLE RISER MANUAL
Orcaflex User Manual (version 9.8d), Orcina Ltd, Cumbria, UK. Study of flexible riser technology, especially comparing different very shallow water buoyancy systems. Flexible Riser Configuration Design for Extremely Shallow Water With Surrogate-Model-Based Optimization Jinlong Chen, Jinlong Chen State Key Laboratory of Structural Analysis for Industrial Equipment.This thesis will consider the design of dynamic, flexible unbounded riser pipes connecting a subsea pipeline to an FSO turret. This thesis will focus on the challenges and solutions for very shallow water depths (less than 50 m). The system should avoid axial compression in the pipes and contact between the pipes and other structures. The pipes should not experience excessive curvature a limiting value is given by the manufacturer. The discretized line model is made up of massless segments with torsional and axial properties as well as nodes that defines the actual riser segment such as weight, mass, buoyancy, drag forces and many others. These different solutions have different characteristics which influence their suitability for a given situation. In orcaflex, line is used to model the actual flexible riser in the Lazy wave configuration. Our personnel have experience in the design and construction of riser systems in shallow and deepwater applications whilst Peritus’ forward focus is on dynamic risers in deep and ultra-deep waters. This design codes are embedded in Orcaflex which is the FEA tool adopted here. Marine Risers Riser Engineering Capabilities Peritus’ capability in Risers is founded on our leading industry personnel, with experience to develop innovative solutions. Other advantages include the ability to be. 300-400 m) and in the ranges between these depths.įlexible risers can have different configurations. make the wall of the riser, the flexible riser (when compared to the equivalent steel riser) has a low relative bending to axial stiffness. The flexible riser top connection to the floating production platform is a critical region for fatigue lifetime (re)assessment. A wide range of buoyancy solutions have been developed for very shallow water (e.g. However, the maximum bending moment created in the riser with the Chinese Lantern configuration is 73% higher than the riser with the Lazy S configuration.Flexible risers are widely used for a range of water depths and can accommodate large floater motions when using a buoyant system. The results also show that in the most critical case, the maximum tension created in the PLEM is 7% higher in the riser with the Lazy S configuration than in the riser with the Chinese lantern configuration. The results show that the Chinese Lantern configuration performs better in terms of SAFOP than Lazy S. Therefore, the purpose of this paper is to compare the permissible horizontal displacement range or SAFOP of each of these risers in interaction with the mooring system and also to compare the dynamic response of these risers under operating conditions using OrcaFlex software with Persian Gulf environmental conditions in 16 coordinate directions. It is common to not consider the interaction between these riser configurations and the mooring system. The risers are one of the most important components of the CALM oil terminal during the unloading/loading operations of tankers, which are used in two common configurations, including Chinese Lantern and Lazy S.