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*MGROWTH
Data format:
A single line asfollows:
IGR MV IOP ITAB INTERP IHYD
Status :
Optional
Restriction :
Group of elements must have been previously defined.
Purpose :
To compute the marine growth impact on a line or on all lines of an analysis. The parameters of the marine growth are defined in a table (*TABLEMCOL). The table first column is depth (m) if IOP=0 or position along the line if IOP=1. The table has 2 columns if IHYD=0, the second column being the marine growth thickness (m). If IHYD=1, specific hydrodynamic coefficients are then provided to replace the default coefficients. In that case, the table has 6 extra columns corresponding to transverse drag, axial drag, transverse added mass, axial added mass, transverse inertia coefficient, axial inertia coefficient. Interpolation between two positions can be linear (INTERP=0) or per block with INTERP=1 (use lower depth or smaller position value). The data used by the solver are provided in .txt file (MaGr_..).
Details:
| Parameter | Description |
|---|---|
| IGR | Reference to group number. If 0, marine growth is applied on all groups |
| MV | Volumic mass (kg/m3) |
| IOP | Option: 0 for Waterdepth, 1 for position along the line |
| ITAB | ID of the variation table |
| INTERP | Interpolation type: 0 for linear, 1 for constant |
| IHYD | 0 : Hydrodynamic coefficients are not provided, 1 : coefficients are provided |
