As described in the OTIS documentation, model parameters and simulation options are specified using several input files. These input files are often developed on the user's local computer system using a text-based editor. As an alternative, users may fill out the web-based forms on the screens that follow. After providing the required information, users can download the resultant input files and run OTIS in the usual manner.
Note: Web-based generation of the input files is limited to the control, parameter, and flow files associated with OTIS — preparation of the STARPAC and data input files associated with OTIS-P must be completed using a text editor. In addition, note that input file generation is limited to the case of a single solute (NSOLUTE=1) and steady flow (QSTEP=0).