The PRES data record specifies the structure for which the hydrodynamic pressure/load on elements are calculated and output. This data record is only valid in Aqwa-Naut analysis.
When this card is defined, the program makes the following assumptions:
The convolution approach is used to estimate the radiation pressure components on the diffraction panels.
The LHFR option is previously defined in the Aqwa-Line analysis from which the hydrodynamic database is imported.
The hydrostatic and incident wave components are calculated under the instantaneous incident wave surface.
2 5 7 11 21
- --- -- ---- ----- ----- ----------
|X| | |PRES| | |
- --- -- ---- ----- ----- ----------
| | | | |
| | | | |_Filename (no extension) from which the .PAC etc
| | | | database is imported
| | | |
| | | |_(1) Structure Number (I5)
| | |
| | |_Compulsory Data Record Keyword (A4)
| |
| |_Optional User Identifier (A2)
|
|_Compulsory END on last data record in Data Category (A3)
(1) The structure number must correspond to one of the structures defined in Data Category 2. If '2' is input, this will correspond to the structure and its associated internal tanks defined in Data Category ELM2. If '0' is input, this will correspond to all the structures (including all internal tanks) defined in this analysis model. Element load output is valid for the structure(s) consisting of panels and Morison elements. It is skipped automatically for a structure that has the point mass element(s) only.