Marine Design Plug-in for Rhino

New Orca3D Version (2.0.11) now available

By on Oct 23, 2019 in Uncategorized |

We are happy to announce the release of Orca3D Version 2.0.11. This is a free update to Version 2 license holders. If you have a Version 1 license, please click here to purchase an upgrade to Version 2.

To update a previous installation of Orca3D Version 2, use the Control Panel to uninstall your current version. Next, download the installation file from this page. Double-click on the downloaded file to run it, and follow the instructions.

Following is a summary of what is new in Version 2.0.11, as well as the previous release, Versions 2.0.9 and 2.0.10:

Release 2.0.11 (October 2019)

New Features:
• A new command, OrcaNavCadAnalysis, was created that allows Orca3D to interface with the speed/power prediction program, NavCad, developed by HydroComp, Inc. This command requires geometry, hydrostatics, and other input from the Rhino model then exports this information to a script that can be imported into NavCad where additional analyses can be performed. This command is in Work-in-Progress (WIP) status. Please provide feedback on any issues related to this function.
• Extended the OrcaSimericsAnalysis CFD command to include the ability to specify wake fraction input that is used for self-propelled simulations. The wake fraction can be a single value or a speed-dependent set of values, and it is used to determine the nominal inflow velocity into the actuator disk representation of the propeller.

Enhanced Features:
• Modified the OrcaSimericsAnalysis CFD command to include a new face type classification. The “appendage” face classification can be used to exclude one or more model faces from the “hull” bounding box calculation during CFD grid refinement. Faces classified as appendages still have their own grid refinement zone around them, but in the case where an appendage extends well outside of the bounding box of the rest of the hull (such as a fin keel on a sailboat or a foil on a hydrofoil) this avoids unnecessary grid refinement caused by an artificially large hull bounding box.
• Modified the form to assign Orca stock materials to geometry so that the dropdown combobox for selecting the material is sorted alphanumerically. This makes it more convenient to find the correct material when the list is quite long.
• Modified Orca reports (hydrostatics, speed/power, weight/cost) so that they open in front of main Rhino window.

Bug Fixes
• Fixed a bug in stability criteria evaluation for computing required freeboard to deck edge when the design condition does not have “Mirror” turned on.
• Fixed a bug in the OrcaCreateStrake command where the projected base strake curve might not match the input curve when selecting a custom curve (due to a tolerance issue).


Release 2.0.10 (July 2019)

Bug Fixes:
• Fixed a bug in the Orca3D Marine CFD Python script that is automatically generated. For now, all simulations will run to completion without any convergence checking to avoid premature ending of simulations.


Release 2.0.9 (June 2019)

Enhanced Features:
• Modified the OrcaSimericsAnalysis CFD command to take advantage of new functionality in SimericsMP 5.0. This included adding new CFD grid density options and adding an input to control the number of saved CFD results files. This input value currently defaults to 4 so that the user will have 4 .sres files when running the simulation, which allows the user to get back to the most recently saved point in the simulation if a failure or reboot occurs during the simulation.
• Added a new button in the hydrostatics form to allow the user to both create and select a flotation plane graphically instead of having to first create the plane before running the hydrostatics command.
• Extended the offset table command to include 3D curves that the user selects (such as chine or deck edge curves) to the offset table output. To include these curves the user must first create them if necessary by extracting them from the surface model and then select the offset table option to specify curves to include and select them along with stations, waterlines, and buttock curves.

Bug Fixes:
• Fixed a bug in the OrcaCreateFloatPlane command in which plane creation could fail if the selected reference points were on a perfectly horizontal plane.
• Fixed a bug in setting flotation plane sinkage, trim, and heel values in hydrostatics form by picking a plane surface that occurred with certain model orientations.
• Fixed a bug in decimal separator localization in the Simerics propeller performance input form.
• Fixed an issue in defining the Orca3D Design Condition where it was possible to have objects on hidden/locked layers that were part of the design condition even after the user chose to re-select objects in the condition.