CREATE SIMPLE UNTRIM2 GRID

Basic Information

Name of Program

create_simple_untrim2_grid

Version-Date

January 2014

Description-Date

January 2014

Catchwords

mathematical model UNTRIM2
computational grid
sub grid
grid generation
MATLAB stand-alone application

Short Description of Functionality

create_simple_untrim2_grid creates a simple computational grid with sub grid for Mathematical Model UNTRIM2. A one-dimensional grid is generated. Variations of cross-section in the longitudinal direction are only represented in the sub grid (variable sub polygon area, variable sub edge length). Change of system geometry in longitudinal direction is described using a simple polynomial expression.

Picture GUI of application create_simple_untrim2_grid.

Grid generation is dependent on the following input parameters:

1. type of boundary condition at the river end;
2. type of boundary condition at the seaward end;
3. width at the river end;
4. width at the seaward end;
5. length;
6. depth (constant);
7. geographic latitude;
8. factor (exponent) determining the shape of the system;
9. number of polygons used in longitudinal direction (grid resolution).

All parameters can be accessed by the GUI. All changes are immediately visualized.

Main characteristics of the application:

• GUI-driven MATLAB stand-alone application;
• interactive choice of grid generation parameters;
• grid visualization;
• output to grid data files.

Input-Files

1. interactive input via GUI.

Output-Files

1. computational grid for UNTRIM2 (filetype utrsub_grid.dat in VC format with extension *.grd).
2. (plot-) sub grid (filetype pltsub_grid.upi, additionally also with extension *.grd-4-plt for JANET).
3. create_simple_untrim2_grid.log (logfile).

Methodology

grid is created according to the parameters set by the user.

Program(s) to run before this Program

none

Program(s) to run after this Program

JANET, UTRPRE, UNTRIM2

Additional Information

Language

MATLAB

Additional software

Linux: MATLAB Compiler Runtime MCR R2013b in directory /usr/local/MATLAB/R2013b

Original Version

I. Holzwarth, R. Hesse, G. Lang

Maintenance

G. Lang, NN

Documentation/Literature

None. See also under MATLAB.

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