Sima

This example explains how to run Sima analysis without using graphical user interface with the help of the Sima Runtime Engine (SRE) and Sima Python library (SIMAPY). Particularly, we will run several cases of floating offshore wind turbine (OWT) coupled analysis with different sea states as a preparation to perform time domain fatigue analysis in Sesam Wind Manager.

This document introduces an example model of an export system installation with line break scenario, as shown in Figure 1-1. There are 7 mooring lines and one Oil Offloading Line (OOL) line that are connected to an Oil Offloading Buoy (OOB). In the simulation, three mooring lines (line 1, line 2 and line 6) will be disconnected from the OOB.

This document introduces an example model of a tension-leg platform with defined diffracted wave fields and air gap check points, as shown in Figure 1-1. There are 10 risers and 12 tendons connected to the TLP. Two air gap check points are defined with one above the body origin of the TLP and another one close to the column of the TLP.

This example introduces wet towing operation of a spar-type floating offshore wind turbine by three towboats in a relatively calm wave and wind condition. A common towing configuration, featuring a leading towboat and two supporting towboats, is used. Additionally, the functionality of dynamic positioning (DP) system of the towboats is also demonstrated.

The example shows how an internal turret can be modelled for single-point mooring.

The floater consists of two bodies, FPSO and Turret. FPSO is a typical SIMO-type body that can freely move in 6-DOFs. Turret is a special SIMO-type body that was designed for fixed, prescribed, or articulated structures.

This document introduces an example of modelling of a complex system including a free-standing hybrid riser tower with jumpers and a vessel with bell mouths. as shown in Figure 1-1. The FPSO is modelled as Support Vessel and connected with gas jumper, water jumper, production jumpers and control cables through bell mouths on the side of FPSO.

This document introduces an example model of a pipe layer vessel conducting pipe laying operation, as shown in the figure. The pipe layer has a stinger at the stern of the vessel. The pipe is supported by the stinger and lowering towards the seabed.

This document introduces an example of a 15MW floating offshore wind turbine (FWT) model built in Sesam software Sima. The 15MW FWT model consists of a rotor nacelle assembly, a tower, a Semi-submersible foundation and a 3-line mooring system. A ROSCO controller is used in this model, the aero-hydro-servo-elastic coupling is considered.

SimaPy is a Python library that can be used to interact with Sima. It can be used to create new Sima models, modify existing models, and run simulations without using the Sima GUI. SimaPy is mainly useful to automate the modelling of Sima analysis, which we will learn in this example.

This example introduces the modelling of a floating photovoltaic (FPV) array. The modelling is performed by creating a single floater as the base model and then copying the rest of the model using SimaPy library in Python.