Using OrcaFlex with Sesam

Date: 20 August 2025Reference documentExample

This example explains how Python can be used to translate results from an OrcaFlex results file into input files that can be used in Sesam. The example code OrcaFlex2Sesam can be run both as a Python script on the command line, and as a Jupyter Notebook, both of which are provided. The example code uses the OrcaFlex Python interface to extract data from an OrcaFlex analysis.

This script targets using results data from a coupled analysis in OrcaFlex in Sesam’s time domain workflows for Floating Offshore Wind. Motions, auxiliary forces (from turbine and mooring lines), waves and wave components are converted. These can then be used in Sesam with the goal to perform a structural analysis and post-processing of the floater.

A brief introduction to the use of Sesam data in OrcaFlex and OrcaWave is also included.

The latest script version now supports low-frequency horizontal drift motion and yaw correction, these outputs can then be used in certain Sesam FOWT workflows (e.g., Time Domain Load Reconstruction using Wasim 7.2 and later). For additional details, please refer to the verification report.

Time domain Load Reconstruction method in Wasim

Date: 21 May 2024TutorialInput files

This tutorial explains how to use the Load Reconstruction method in HydroD and Wasim with a user defined loading condition and including Morison loads.

Comparison of time domain Load Generation and Reconstruction methods available in Wasim

Date: 21 May 2024TutorialInput files

This tutorial explains how to set up Direct Load Generation and Load Reconstruction methods through HydroD, Wadam and Wasim, and provides a comparison of the methods.