Orcina news

Here you will find the latest news on the development of OrcaFlex. Alongside our LinkedIn page, it is a valuable source of information about what we are up to!

OrcaFlex 11.1 UGM videos

We had a fantastic series of OrcaFlex 11.1 user group meetings last week! Thank you to everyone who attended, we hope you found them interesting and informative.

Whilst we would love to have been able to see you in person, there were also tangible benefits from conducting the user group meetings in this way. For example, of the 386 individuals who attended one or more sessions, we had nearly 30 countries represented. Some of those present were from parts of the world we would not normally visit on a regular basis, such as Israel, Japan, Canada and Vietnam!

In all, we had over 800 attendees across all six sessions! It was incredibly encouraging to see such large numbers, as well as some really interactive Q&A sessions which, for us, were one of the highlights.

You can find recordings of all sessions on the videos page of our website, as well as on our YouTube page.

OrcaFlex 10.3 turbine validation

Following the introduction of the turbine model object in version 10.3 we have now produced a report which details the validation performed on the turbine against documented industry studies.

The validation study considers the National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine, which is
recognised as an industry-standard reference turbine system.

Two separate turbine systems have been modelled and subjected to detailed analysis in OrcaFlex:

  • A land-based wind turbine system.
  • A floating wind turbine system – based on the OC3 Hywind system.

Analysis of the land-based scenario was considered to facilitate basic validation of the turbine response determined via OrcaFlex. Detailed analysis of the OC3 Hywind system was then considered to help validate the behaviour of a fully-coupled floating wind turbine system in OrcaFlex.


The OC3 Hywind system modelled in OrcaFlex 10.3
The OC3 Hywind system modelled in OrcaFlex 10.3

Results were compared to those from other wind turbine simulation tools; namely FAST, MSC.ADAMS, Bladed and HAWC2.

Overall, OrcaFlex has been shown to accurately capture the aerodynamic and hydrodynamic loading on the considered turbine systems. Close agreement was generally observed between the OrcaFlex results and those available from the other simulation tools – particularly with respect to the calculated turbine rotor response.

The full report is available alongside previously published OrcaFlex validation cases on the validation page here.

OrcaFlex 10.3c released

We have just released a minor upgrade, version 10.3c, which fixes a number of bugs. Full details of the changes are described here. We recommend that users of 10.3 upgrade to 10.3c.

A patch to upgrade from 10.3a or 10.3b to 10.3c can be downloaded here. The full installation program can also be downloaded from your download page. Please contact us if you do not have the link to your download page.