Below is a list of links to OrcaFlex example topics. Within each topic are a number of examples which each comprise one or more simulation files, a description pdf file, workspace files and sometimes other supporting files. The files for each example are zipped for easy download. The simulation files can be opened and viewed with the demonstration version of OrcaFlex.
In these examples, four types of riser system are shown: a simple catenary, a lazy wave, a steep wave and a pliant wave.
The examples illustrate:
In these examples, three types of riser system are shown: a lazy S (both simple and detailed), a steep S and a pliant S. An S configuration is similar to a catenary but has support provided at about midwater by an arch structure.
The examples illustrate:
Flexible jumpers connect a spread-moored FPSO to a high riser tower in deep water, i.e. the tower top is close to the surface. The lines descend to the seabed as rigid structures clamped around the tower. An installation of this type can be found in the Girassol field.
The example illustrates:
This model represents an FPSO system with a releasable turret. Disconnecting systems are found in regions where typhoons or ice flows are common. It allows the vessel to be removed until conditions improve.
The turret can be lowered from the vessel with winches. However downtime is expensive so operators prefer to keep producing until the last moment then drop the turret and drive off. The turret drops below the severe weather until the FPSO returns to reconnect.
The turret system needs to be designed so there are acceptable responses in all three phases.
This example contains three examples of steel catenary risers (SCRs). These are:
