The latest release of OrcaFlex 11.5 is OrcaFlex 11.5e.
The new features introduced in OrcaFlex 11.5 can be viewed online:
The documentation can also be downloaded for offline use:
To upgrade to OrcaFlex 11.5e, download the install program from your company’s Orcina software download page. A link to this page was sent to your software administration contact when we first released 11.5. If you do not have access to this page, please contact us.
A more in depth discussion of the major new features introduced in OrcaFlex 11.5 is available in the news section.
Known bugs in version 11.5e
OrcaFlex
- When solving in the frequency domain using low frequency, combined linearisation solution frequencies, OrcaFlex initially performs a wave frequency solve that contributes to the quadratic drag linearisation. If a vessel type includes other damping, that is solely calculated from primary wave frequency motion, then the vessel type’s linear damping coefficients erroneously does not contribute to this initial wave frequency solve. This bug does not affect the vessel type’s quadratic damping coefficients, nor other damping applied to low-frequency or total motion. Additionally, stand-alone wave or low-frequency solution modes are not impacted by this bug.
- When reading amplified drag coefficients from a SHEAR7 .plt file which contains duplicate values for x/L, no error is raised. OrcaFlex continues to process the file, with undefined behaviour. OrcaFlex models using fine segmentation can generate x/L values that have spacing smaller than the precision available in the SHEAR7 output file, which in turn can result in duplicate x/L values.
- Text data files which specify both the pitch controller and the imposed motion consistent with solver data can fail to load, reporting a change not allowed error. To work around this error, make sure that the imposed motion consistent with solver data is set later in the file than the rest of the turbine data.
- For modeless data forms, undo actions are not correctly recorded when a data form was closed by the next or previous action, or when using the edit other object context menu item.
- The decouple lateral and axial friction line-seabed contact option is not inherited by a line’s stiffener attachments. Lateral and axial friction are always treated as coupled for stiffeners.
- The apply contact forces at centreline line-seabed contact option is not inherited by a line’s stiffener attachments. Contact forces are always being applied at the contact point for stiffeners.
- The bespoke seabed contact properties defined by a line’s seabed sections are not inherited by its stiffener attachments.
- Changes made to the contents pressure reference Z level of a line have no effect in a restart analysis. The reference Z value is always inherited from the parent model.
- Results at some nodes may be erroneously omitted from line feeding range graphs because OrcaFlex incorrectly views the nodes as belonging to growing or shrinking segments.
- Running a restart analysis in which an object’s connection is changed from one line to another may result in an access violation error. This happens if the object was originally connected to a node whose node number exceeded the number of nodes on the new line.
- Turning on hysteretic stiffness for nodes that were previously inactive in a chain of restart analyses may result in an access violation error.
OrcaWave
- The peak memory estimate given on the validation page under reports how much memory is required. In practice, this is significant only for models with an excessively large number of panels in the free surface panelled zone.
These bugs will be fixed in 11.5f.