After simulations are made for the various plans, the results can be compared simultaneously in both tabular and graphical form. Once the basic data are entered into the HEC-RAS, the modeler can easily formulate new plans. Each plan represents a specific set of geometric data and flow data (and possibly sediment data, water quality data, and hydraulic design information). The data files for a project are categorized as follows: plan data, geometric data, steady flow data, unsteady flow data, quasi-steady flow data, sediment data, water quality data, and hydraulic design data.ĭuring the course of a study the modeler may want to formulate several different Plans. The modeler can perform any or all of the various types of analyses, included in the HEC-RAS package, as part of the project. In HEC-RAS terminology, a Project is a set of data files associated with a particular river system. The system can perform Steady Flow water surface profile calculations, One and Two-dimensional unsteady flow computations, Sediment Transport/movable boundary computations, water quality analysis and several hydraulic design computations. HEC-RAS is an integrated package of hydraulic analysis programs, in which the user interacts with the system using a Graphical User Interface (GUI).
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