Releasing Calculation Geometry

The reason for releasing the calculation geometry, is to allow the use of the geometry model by the analysis modules within Initial Design, such as Hydrostatics and Hydrodynamics.

During the process of defining a vessel’s compartmentation you will have defined a number of compartments which are then merged together to form a complex compartment. The components used as part of the merging process may not be required in Hydrostatics if they are not compartments in their own right. Similarly, those internal surfaces not required in the definition of zones for probabilistic stability need not be released.

To mark an element for release as Calculation Geometry use the Compartment View tree. Under the Envelopes node all elements are listed with respect to their relevant parent envelope, ensure each item required is marked with a tick, , signifying that it should be released. If it is not marked either:

• simply click the box to the left of the name with the mouse or,

• select it and use the pop-up menu item CALC STATUS \ ON (use the other menu items OFF or TOGGLE to clear the status or switch it’s current status respectively).

  Note:
  When using the menu items multiple items can be selected.

The calculation geometry is released by selecting from the main menu FILE \ RELEASE \ CALCULATION GEOMETRY or RELEASE CALC GEOM from the Compartment View tree pop-up menu.

Note:
Weight items to transfer are defined by selecting internals using the Weight Analysis tool (see section 4.15 Weight Analysis).

Important:
A Surface/Compartment design has just a single Calculation Geometry design associated with it.

Note:
The geometry representation used by Hydrostatics is facet information. Elements are facetted when they are generated according to the current settings in the Faceter page on the Options dialog, unless individual settings for an element have been set via the Faceting Parameters dialog. for further information on faceting see Faceting Parameters in Chapter Screen Based Reference Guide of the Surface User’s Guide.