GGU-PLGW: Short description
Since I know from personal experience that reading user-manuals is quite a chore, there will now follow a short description of the main program functions. After studying this section you will be in a position to display transient groundwater flow. You can learn about the details of the program in the later chapters.
In order to display transient groundwater flow with GGU-PLGW, a file with transient modelling results is required. This file is automatically generated, with the "_t.plw" extension, when modelling transient flow with the GGU-2D-TRANSIENT program.
Open the GGU-PLGW program and select the required result file by means of the "File/Load" menu item.
Go to the "Evaluation" menu. Here, you can specify which of your system flow quantities you would like to display and which type of presentation you prefer. The "Potentials coloured" menu item is especially impressive, or, for horizontal-plane systems, the "3D potentials (array)" menu item. The subsequent dialog boxes can almost always be left using "OK", without further changes having to be made. The program will usually suggest sensible input. The "Determine extreme values …" button should be clicked once however, otherwise an error message will appear.
Select the appropriate menu item for presentation of flow lines. Observe the information given in the preferences. You have the possibility of recording flow lines as distance or time increments.
Using the menu item "Special/Individual values", you can click on individual system nodes and have information on these presented.
If your printer is a colour printer and is correctly installed in WINDOWS, you can create colour output by selecting the menu item "File/Print and export" and then selecting the "Printer" button in the subsequent dialog box. For black and white printers, grey scales will be used. If necessary, alter the printer alignment in the dialog box from "Portrait" to "Landscape" by clicking on the appropriate button. By clicking the "Fit in" button, a zoom factor is calculated, ensuring complete page output to the printer. Otherwise, several pages will be printed. After this, select the "OK" button in order to start printer output. You will then have a graphic output of your system in submission quality.
Experiment with the example data files.
This short description shows that only a few items need to be selected for display of transient groundwater systems. All further menu items deal principally with saving data, and layout. More detailed descriptions follow in further chapters.