SRFR is a DOS program that can be run out of a WINDOWS environment. Once installation is complete, clicking on Start -- Programs -- US Water Conservation Lab (assuming the default folder was selected for the installation) -- SRFR (shortcut) will execute the program.
The main control window, which comes up (following a default help screen) when SRFR is called, contains a default simulation, with sufficient data to execute. Clicking on the traffic-light button in the tool bar performs the simulation.
Some user control is available in the animation screen by clicking on the buttons in the tool bar. Pressing the F1 function key on the keyboard interrupts the animation and brings up a help screen from the on-line manual to explain the meaning of the various tool-bar buttons. Closing the help window resumes the simulation.
In general, pressing F1, or clicking on a ?Help button brings up explanatory information pertinent to the current display. This can be printed to an on-line printer for hard copy: press the Printer button, or
By default, the ultimate results of the simulated irrigation are shown in a window displaying the longitudinal distribution of infiltrated water and a series of performance parameters. Alternate graphical displays are available from the tool bar, or as described in paragraph 11, below. The graphs can be printed to an on-line HP laser printer by clicking on the printer button in the tool bar. Alternately, when operating from the DOS prompt in WINDOWS 95 or NT, pressing
The hydraulic properties of the field, the physical design of the system, and parameters defining the operation of the system for the desired irrigation simulation, can be modified in the menus that drop down from the tool bar. SETUP allows the selection of units (English, metric, etc.).
The CONFIGURE menus allow specification of the system and inflow configurations. Greyed-out options are unavailable to the standard user (user level is selectable in the SETUP menu).
The DATA menus allow entry of numerical values for the input data. Many simple simulations can be described entirely by editing the data in the data-SUMMARY window. More complex conditions can be entered through the detailed windows specifying system geometry, field conditions, and inflow.
Cumulative-infiltration depths are based on furrow spacing (by default), except in the case of the SCS families. In that case, infiltration depth is related to volume infiltrated per unit length of furrow by the SCS empirical wetted-perimeter formula. Other choices are available in the Configure menus.
The EXECUTE menus allow specification of the numerical-solution conditions. GO starts the simulation.
The graphics button in the tool bar enables display of the graph type selected from the list available at its right. The user is returned to the main control window by clicking on the X-button at the far left of the tool bar. Alternately, F3, or
Data files can be saved, or saved files can be opened using the FILE menus. Some file operations can be performed by clicking on a file name in the main control window.SRFR software is packaged using InstallShield's 5.5 Professional Edition (a product of InstallShield Software Corporation). The file USWCL-SRFR-Package.exe is a "package for the web" executable. It is designed to conveniently "unpackage" the installation program on your computer so that you may install SRFR. Upon downloading this package file, some browsers will automatically ask you if you would like to install what's in the package. If your browser does not do this, then simply save the package file to your computer and launch it when you are read to install SRFR on your system. Once launched, the setup program presents you with a series of dialog windows, prompting for a destination to install SRFR. Defaults are recommended, and can be accepted by pressing the Next button at each step until finished.