is a comprehensive hydraulic modeling software developed by the U.S. Army Corps of Engineers Hydrologic Engineering Center. It is a suite of programs for civil engineers and hydrologists to simulate the effects of open channel flow on natural and man-made waterways.
HEC-RAS allows for efficient and accurate hydraulic analysis of river systems.
HEC-RAS offers a wide range of features for hydraulic modeling, including:
• Geometric Data Input: HEC-RAS allows users to define the geometry of waterways, including cross-sectional shapes, bank elevations, and bed elevations.
• Flow Input: HEC-RAS allows users to define the flow rate and direction of water in a channel.
• Hydraulic Structure Input: HEC-RAS allows users to define any hydraulic structures, such as culverts, weirs, and bridges, that may be present in a channel.
• Hydraulic Calculations: HEC-RAS can calculate important hydraulic parameters, such as water surface elevation, water depth, velocity, and energy grade line.
• Scour Analysis: HEC-RAS can perform scour analysis to determine the potential for the erosion of a channel bed.
• Floodplain Analysis: HEC-RAS can calculate floodplain inundation and flood depths.
• Bed Material Analysis: HEC-RAS can calculate bed material characteristics, such as bed shear stress, bed load transport, and sediment deposition.
• Flow Modeling: HEC-RAS can simulate the effects of open channel flow on a channel, such as floodplain inundation, sediment transport, and scour.
• Quality Assurance/Quality Control: HEC-RAS has numerous tools to ensure that model results are accurate, such as model verification and sensitivity analysis.
• Output: HEC-RAS can produce a variety of output formats, including tables, graphs, and GIS layers.
• Support: HEC-RAS has dedicated technical support staff to answer any questions and help with any issues that may arise.
HEC-RAS is a powerful and comprehensive hydraulic modeling software package. It has a wide range of features and tools that make it ideal for civil engineers and hydrologists who need to simulate the effects of open channel flow on waterways.