Previous Format of the .COR File
The following format is for Ansys version 2023 R1 or earlier. However, it is still valid for the model without moonpools when running Ansys version 2023 R2 thereafter.
The following is an example of a .COR file defining m points:
1 x1 y1 z1
2 x2 y2 z2
………
m xm ym zm The first number in each row (an integer) is the point series number, followed by the x, y, z coordinates of the point. Note that the x, y, z should be in the Aqwa Fixed Reference Axis system and z should be less than or equal to zero.
Note: You must name the .COR file with the same name as the files output from the preceding Aqwa analysis, even if the name was created from the user's input file name or by Workbench.
Here is an example of a simple .COR file:
20 14.0 7.5 0.0 10 14.0 7.5 -3.0 25 12.0 0.0 -3.0
Current Format of the .COR File
When the Aqwa model consists of the moonpool definition, the multiple fluid region matching approach will be employed in the hydrodynamic diffraction analysis. The fluid region in which you require points must be identified.
The format of each point input data is Point id X Y Z Moonpool# Extension#,
where
Point id is the user-defined point identical number (integer), followed by the x, y, z coordinates of the point;
Moonpool# is the global sequence number of the input moonpool;
Extension# is the sequence number of the extended moonpool due to symmetry.
Note: X, Y, and Z should be in the Aqwa Fixed Reference Axis system and Z should be less than or equal to zero.
These 5 variables can be separated by either a comma (,) or single inverted commas (‘ ’).
Moonpool#=0 indicates that the point is in the external fluid region (outside moonpools and vessel hulls).
Extension# associated with an input moonpool due to symmetry is listed in Table 1.1: Sequence Number of Extended Moonpool Due to Symmetry (Extension#).
The combination of Moonpool# and Extension# determines which moonpool internal fluid region this point is located (either input one where Extension#=1 or the extended moonpool where Extension# >1 by the input moonpool of Moonpool# ).
Table 1.1: Sequence Number of Extended Moonpool Due to Symmetry (Extension#)
| Structure Symmetry | Moonpool Symmetry | Input | Fore-aft Mirror | Port-starboard Mirror | Double Plane Mirror |
|---|---|---|---|---|---|
|
Double | No | 1 | 2 | 3 | 4 |
| Fore-aft | 1 | n/a | 2 | n/a | |
| Port-starboard | 1 | 2 | n/a | n/a | |
| Double | 1 | n/a | n/a | n/a | |
| Fore-aft | No | 1 | 2 | n/a | n/a |
| Fore-aft | 1 | n/a | n/a | n/a | |
| Port-starboard | No | 1 | n/a | 2 | n/a |
| Port-starboard | 1 | n/a | n/a | n/a | |
| No | No | 1 | n/a | n/a | n/a |
To ensure backward compatibility, the original data format of "Point id X Y Z " in the legacy .COR file is acceptable if there is no moonpool within the hydrodynamic interaction structure group of which the fluid properties are calculated by AqwaFlow. However, it is recommended to use the new format with or without a moonpool.
The following is an example of a .COR file defining 3 points in the new format:
1 78.75 28.75 -5.00 0 0
1 38.75 8.75 0.00 1 1
257 -38.75 8.75 -5.00 1 1