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ORCAFLEX DEF DYNAMICSPROGRESS SOFTWARE
ORCAFLEX DEF DYNAMICSPROGRESS FREE

An overview of all available properties of the nodes is added. DAVE will automatically determine where the fluid is. Just add mesh as define how much fluid is inside it. They work in the same way as buoyancy meshes.

ORCAFLEX DEF DYNAMICSPROGRESS FREE

If the file is periodic, as recorded in the file header, OrcaFlex will interpret the data accordingly. Tanks with a free fluid surface are now available. bts file format supports periodic time histories. If you have the wind speed $v(h)$ at some other height h (in metres), then the wind speed $V(10)$ at 10m can be estimated using the formula $v(10) = v(h)\,(10/h)^$ respectively. If you are using the OCIMF model for wind load on vessels, the speed is expected to be that at an elevation of 10m (32.8 ft) above the mean water level (MWL). Negative factors may be used, allowing you to model reversing wind profiles.Ī value of '~' means that there is no vertical variation. To do so, you define a vertical variation factor variable data source. To specify a vertical wind speed profile, you may define the wind speed variation with height above the mean water level (MWL) as a dimensionless multiplicative factor.

Wind speed is assumed to be the same at all heights, unless a vertical wind speed profile is specified. The value here is fixed and cannot be edited. The air density is assumed to be constant and the same everywhere. You may choose whether or not wind loads are included for vessels, lines, 6D buoys and 6D buoy wings.

6D buoys – see lumped buoy added mass, damping and drag and spar buoy and towed fish drag.

Lines – see hydrodynamic and aerodynamic loads.

Note also that the old *VESSEL and *RAO keywords have effectively been superseded by the new *VESSEL,INTEGRATED keyword, which accepts RAO data also, thereby eliminating the need for a separate *RAO keyword – hence the ‘integrated’ nature of the new keyword.OrcaFlex includes the effects of wind on: Specifically, the FORMAT= input is used to specify the format of the RAO data, and you may select from a range of standard program formats such as WAMIT, AQWA, MOSES or OrcaFlex.

*RAO is used to specify Response Amplitude Operators for a vessel.

*VESSEL is used to specify the initial position and undisplaced orientation of a vessel.

*VESSEL,INTEGRATED is used to specify all information pertaining to a vessel or vessels.

If you have RAO data which does not originate from any of the above sources, it is possible to define a custom RAO conversion to describe the various conventions pertaining to the RAO data. Flexcom understands the conventions used in these programs and automatically performs the relevant conversions for you. If the data source corresponds to one of the standard programs listed below, it is not necessary to explicitly define a conversion scheme – you simply select the relevant program from a list provided.

ORCAFLEX DEF DYNAMICSPROGRESS SOFTWARE

In order to minimise effort, Flexcom allows you to import RAO data directly from third-party software data files. from a radiation-diffraction program), and the conventions used are rarely consistent with the standard format expected by Flexcom itself. Quite often, RAO data is sourced externally (e.g. One area of particular importance is the definition of vessel RAO data. Flexcom, like most other programs, has its own set of conventions regarding the specification of input data.