#Orcaflex coordinate system full#

This is because the corresponding data cannot be read from the WAMIT. This differs from WAMIT import, which requires the user to manually enter the datum heel and trim before import. owr file and set as the datum heel and trim for the OrcaFlex vessel type. In an OrcaWave analysis where the hull model represents a vessel at non-zero heel and trim, those angles can be read directly from the. This is why the OrcaFlex vessel centre of gravity must be set before import. owr file (which are relative to the OrcaWave body origin) and the centre of gravity coordinates of the OrcaFlex vessel type (which are relative to the OrcaFlex vessel type origin). OrcaFlex deduces the position of this origin, relative to OrcaFlex's vessel origin, from the difference between the centre of gravity coordinates in the. All OrcaWave data have their reference origin at the OrcaWave body origin. You must ensure that the vessel type centre of gravity coordinates are set appropriately in OrcaFlex before importing OrcaWave data into an existing vessel type. These are the preferred load RAO calculation method, the preferred quadratic load calculation method and the preferred QTF calculation method. owr file directly in OrcaFlex, the calculation methods are chosen automatically according to the preferences set in the OrcaWave model (assuming that more than one type of data is available).

The momentum conservation method of computing quadratic loads is not available because it is not currently supported by OrcaWave. In this particular file, the load RAOs are present for the diffraction method only, so the Haskind option is disabled and cannot be selected.

#Orcaflex coordinate system full#

In this example, a choice may be made between the different calculation methods employed by OrcaWave for the Newman QTFs and the full QTFs. owr file you have selected, as illustrated in the following figure: The requested data page of the import vessel data form allows you to choose between the methods that are available in the. Choice of calculation methodsДЇor some types of data (load RAOs, Newman QTFs, full QTFs), OrcaWave may offer results from various different calculation methods. For example, the import of the mesh drawing, symmetry and vessel type length (classed as part of the structure data on the import form) are exclusive to OrcaWave files. AQWA, WAMIT) however, there are some aspects that are particular to OrcaWave. This process is very similar to how hydrodynamic data is imported from other sources (e.g. owr file can be imported into a model's preexisting vessel types. Importing an OrcaWave file into an existing modelДata from an. which load RAOs to import if both Haskind and diffraction load RAOs are present вЂ“ see below) will be resolved according to the preferences in the OrcaWave model. All available data will be imported during this process and any decisions (e.g. The standard import process is then carried out automatically to populate the hydrodynamic data for the newly created vessel types. The vessels are placed in the coordinate system defined in the OrcaWave file (with the global origins of the OrcaWave and OrcaFlex coordinate systems assumed to be coincident).

The vessel initial positions and orientations.The centre of gravity for each vessel type and draught.If the OrcaWave analysis used a water depth of Infinity вЂ“ not permitted in OrcaFlex вЂ“ then this data will not be imported and a warning will be raised. The water depth, assuming that this takes a finite value.owr file in OrcaFlex also sets the following data from the corresponding information in the OrcaWave model: owr file, it detects which bodies are in the OrcaWave model and creates appropriate vessels and vessel types to represent these bodies. owr file directly in OrcaFlex via the file menu.

This is in addition to being imported into existing vessel type objects in the same way that other hydrodynamic data formats are imported. owr files can be opened directly in OrcaFlex (e.g. Unlike other hydrodynamic data files (e.g. owr extension, from which OrcaFlex can import the hydrodynamic data. OrcaWave outputs its results to a binary file with an.