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There will be little instruction on the hydraulics to determine the computer input parameters. MODEL USERS BACKGROUND A description of the HEC-RAS model and its use is given in a site example.
Hec ras etc windows#
HEC-RAS operates under the MS-Windows environment (version 3.1 or Windows 95) and provides stateof-the-art Graphical User Interface (GUI) graphics for both input and output. The HEC-RAS computer model has a large number of options, such as mixed flow regime analysis, allowing analysis of both sub- and supercritical flow regimes in a single computer run, culvert and bridge routines allowing for multiple openings of different types and sizes, quasi 2-D velocity distributions, and xy-z graphics of the river channel system. HEC-RAS program will import HEC-2 input data filesĪnd perform a hydraulics analysis yielding the same results as the HEC-2 model.
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(1995)) will replace the HEC-2 backwater and ultimately the HEC-6 erosion and sedimentation programs.
Hec ras etc software#
The Hydrologic Engineering Center River Analysis System (HEC-RAS) is intended for calculating water surface profiles for steady gradually varied flow in nature or man-made channels.Įngineering software package (Army Corps. The output is tabulated in a report at the end of each example stream velocities, discharge, critical water surface, elevations, etc. The examples have figures of cross sections, longitudinal and perspective views of the stream flows. A complete set of the windows input data is given and, in some cases, blank windows are given to show how the data should be input to the program. Then each illustrative example is given with the procedure outlines and figures of the windows shown on the computer, as well as tables with data input. This is followed by a presentation of the main elements of the program, data requirements, geometric data, boundary conditions, etc. This section has an introduction where the basic elements of HEC-RAS are given, with a description of the mathematical and physical principles used and the special features of the program. The illustrative examples range from the determination of backwater curves for a simple stream network to the solution of stream elevations with culvert and bridge crossings.Ĭomputer program HEC-RAS is used to determine stream widths, elevations and flows.
Hec ras etc series#
HEC-RAS supports one-dimensional analysis of river flow that means if the cross-sectional shape changes, if bends are there or other two or three dimensional aspects are there, their hydraulic effects would not be included in the modeling and analysis.HYDRAULIC ENGINEERING USING HEC-RAS 1 - Theory and Background In this section the student is instructed to solve a series of site specific natural stream flooding examples. What is HEC-RAS HEC-RAS provides a rich Graphical User Interface (GUI) where it has various components like hydraulic analysis components, data storage, management, graphics and reporting components. HEC-RAS supports multi-tasking, multi-user network environment which means if in your office you have a networked environment you can share the calculations, models, results and reports. HEC-RAS is a computer program/software that allows you to perform one-dimensional steady and unsteady flow river hydraulics calculation including modeling and analysis. Hydraulic Engineering Center (HEC) is situated in Davis, California, USA. HEC-RAS stands for Hydraulic Engineering Center, River Analysis system, as the name suggests, Hydraulic Engineering Center (HEC) has developed this River Analysis System (RAS).