TC2BAGGER

Basic Information

Name of Program

TC2BAGGER

Version-Date

February 1996

Description-Date

April 2008

Catchwords

preprocessor
finite element grid modification of topography deepening and refillment

Short Description of Functionality

The program TC2BAGGER is a preprocessor which is used to modify the bathymetrical depth given at each node of an existing (triangular) finite element grid. The nodes which shall be modified (modification nodes) are selected in accordance with one of the following criteria:

• their position can be either inside or outside of an (optional) surrounding polygon
• they can be situated either inside of an additional dredger-polygon or they are lying inside of a second finite element grid (dredger-grid) which contains spacially varying informations for the modification of the actual water depth
• modification of the nodal values for the bathymetrical depth can can be explicitely forbidden for nodes to which selected nodal marker values are attached

The actual nodal depth can be modified in the following different ways (modification options):

1. uncoditional deepening/refillment: at all modification nodes the actual depth is modified with the modification value
2. unconditioanl setting of the depth: at all modification nodes the actual depth is set to the modification value
3. conditional deepening: at all modification nodes where the actual depth is smaller than the modification value the depth will be set to the modification value. Areas which are already deeper than the depth given by the modification value remain unchanged
4. conditional refillment: at all modification nodes where the actual depth is larger than the modification value the depth will be set to the modification value. Areas which are shallower than the depth given by the modification value remain unchanged.

The modification value is either connected with a dredger-polygon or results from the local depth in the dredger-grid.

Input-Files

1. general input-data (filetype tc2bagger.dat)
2. grid with actual bathymetry (filetype gitter05.dat/bin)
3. dredger-polygons (filetype bagger.dat)
4. dredger-grid (filetype gitter05.dat/bin)
5. (optional) surrounding polygon (Dateityp poly.dat)
6. (optional) list of nodal markers (filetype knok.gitter05.dat/bin)

Output-Files

1. grid with modified bathymetry (filetype gitter05.dat/bin)
2. (optional) grid with differences for bathymetry (filetype gitter05.dat/bin)
3. printer file (filetype tc2bagger.sdr)
4. (optional) trace of program execution (filetype tc2bagger.trc)

Methodology

The nodal depths at the modification nodes are either set to the values related to the dredger-polygons or to the interpolated values from the nodal depths given in the dredger-grid.

Program(s) to run after this Program

HVIEW2D, JANET, TICTRI, TOUTR, UPDATE

Additional Information

Language

Fortran90

Additional software

-

Original Version

G. Lang

Maintenance

working group PRE

Documentation/Literature

$PROGHOME/examples/tc2bagger

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