• Hec Ras User Manual 5
• Hec Ras 4.1

For details on how to use the RAS Mapper Floodplain Delineation Capabilities in HEC-RAS, please review Chapter 20 of the User’s Manual. HEC-RAS Manuals and Help System The HEC-RAS User’s Manuals has been completely updated for the 4.1.0 software release. All of the chapters have received updated text and graphics. Nov 04, 2016  HEC-RAS Basics Part 4 of 7: Inflow, outflow, and rain-on-grid boundary conditions - Duration: 10:50. The RAS Solution 9,241 views. Choosing a Backup Generator Plus 3 LEGAL House Connection. Manual Hec Ras In Italiano Using a joined 1d river model and 2d storage area. The dtm under it is partly new LiDAR data. The black mapping is the floodway boundary, as generated by HEC-RAS Version 5.0 stretch provides significant utility and efficiency over manual delineation. DownloadManuale hec ras italiano pdf. Manuale hec ras. HEC-RAS 3.1.3 is also available to download in 9 separate files. This is designed for the low bandwidth user (e.g. 56K dial-up) who may be having trouble downloading the Full Setup Package above. Once downloaded, these 9 files will be merged together using a. Jan 22, 2010  For details on how to use the RAS Mapper Floodplain Delineation Capabilities in HEC-RAS, please review Chapter 20 of the User’s Manual. HEC-RAS Manuals and Help System The HEC-RAS User’s Manuals has been completely updated for the 4.1.0 software release. All of the chapters have received updated text and graphics.

Note: các bạn sinh viên có thể download phần mềm về và đăng ký các đè tài nghiên cứu khoa học dựa trên HEC-RAS

HEC-RAS has been developed for the U.S. Army Corps of Engineers. However, software developed at the Hydrologic Engineering Center is made available to the public whenever appropriate. Use is not restricted and individuals outside of the Corps of Engineers may use the program without charge. HEC will not provide user assistance or support for this software to non-Corps users. See the software vendor list to locate organizations that provide the program, documentation, and support services for a fee. Downloading this software indicates full acceptance of your responsibility in the use of this program. Please see the distribution policyfor more details.

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HEC-RAS is designed to perform one-dimensional hydraulic calculations for a full network of natural and constructed channels. The following is a description of the major capabilities of HEC-RAS.

User Interface. The user interacts with HEC-RAS through a graphical user interface (GUI). The main focus in the design of the interface was to make it easy to use the software, while still maintaining a high level of efficiency for the user. The interface provides for the following functions:

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Data Entry and Editing

Hydraulic Analyses

Tabulation and Graphical Displays of Input and Output Data

Reporting Facilities

On-Line Help

Hydraulic Analysis Components. Currently the steady and unsteady flow components of HEC-RAS are fully implemented for use. The sediment transport component is under development at this time.

Steady Flow Water Surface Profiles. This component of the modeling system is intended for calculating water surface profiles for steady gradually varied flow. The system can handle a full network of channels, a dendritic system, or a single river reach. The steady flow component is capable of modeling subcritical, supercritical, and mixed flow regimes water surface profiles.

The basic computational procedure is based on the solution of the one-dimensional energy equation. Energy losses are evaluated by friction (Manning’s equation) and contraction/expansion (coefficient multiplied by the change in velocity head). The momentum equation may be used in situations where the water surface profile is rapidly varied. These situations include mixed flow regime calculations (i.e. hydraulic jumps), hydraulics of bridges, and evaluating profiles at river confluences (stream junctions).

The effects of various obstructions such as bridges, culverts, weirs, and structures in the flood plain may be considered in the computations. The steady flow system is designed for application in flood plain management and flood insurance studies to evaluate floodway encroachments. Also, capabilities are available for assessing the change in water surface profiles due to channel improvements, and levees.

Special features of the steady flow component include: multiple plan analyses; multiple profile computations; multiple bridge and/or culvert opening analyses; and split flow optimization.

Unsteady Flow Simulation. This component of the HEC-RAS modeling system is capable of simulating one-dimensional unsteady flow through a full network of open channels. The unsteady flow equation solver was adapted from Dr., Robert L. Barkau’s UNET model (Barkau, 1992 and HEC, 1997). The unsteady flow component was developed primarily for subcritical flow regime calculations.

The hydraulic calculations for cross-sections, bridges, culverts, and other hydraulic structures that were developed for the steady flow component were incorporated into the unsteady flow module.

Data Storage and Management. Data Storage is accomplished through the use of “flat” files (ASCII and binary), as well as the HEC-DSS. User input data are stored in flow files under separate categories of project, plan, geometry, steady flow, unsteady flow, and sediment data. Output data is predominantly stored in separate binary files. Data can be transferred between HEC-RAS and other programs by utilizing the HEC-DSS.

Data management is accomplished through the user interface. The modeler is requested to enter a single filename for the project being developed. Once the project filename is entered, all other files are automatically created and named by the interface as needed. The interface provides for renaming, mobbing, and deletion of files on a project-by-project basis.

Hec Ras User Manual 5

Graphics and Reporting. Graphics include X-Y plots of the river system schematic, cross-sections, profiles, rating curves, hydrographs, and many other hydraulic variables. A three-dimensional plot of multiple cross-sections is also provided. Tabular output is available. Users can select from pre-defined tables or develop their own customized tables. All graphical and tabular output can be displayed on the screen, sent directly to a printer (or plotter), or passed through the Windows Clipboard to other software, such as a word-processor or spreadsheet.

Reporting facilities allow for printed output of input data as well as output data. Reports can be customized as to the amount and type of information desired.

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Looking for archived versions of HEC-RAS?

HEC-RAS 3.1.3 Download (High Bandwidth):

This download is for users with high bandwidth internet connections such as DSL or Cable. Full Setup Package (39.4MB) - Primary Download Site | Alternate Download Site

HEC-RAS 3.1.3 Download (Low Bandwidth):

HEC-RAS 3.1.3 is also available to download in 9 separate files. This is designed for the low bandwidth user (e.g. 56K dial-up) who may be having trouble downloading the Full Setup Package above. Once downloaded, these 9 files will be merged together using a utility program available below. This utility program takes all 9 files and combines them into one setup.exe that is identical to the Full Setup Package available above. Step 1: Download all 9 files to your computer. Part 1: setup.exe.001 (4.76 MB) - Primary Download Site | Alternate Download Site Part 2: setup.exe.002 (4.76 MB) - Primary Download Site | Alternate Download Site Part 3: setup.exe.003 (4.76 MB) - Primary Download Site | Alternate Download Site Part 4: setup.exe.004 (4.76 MB) - Primary Download Site | Alternate Download Site Part 5: setup.exe.005 (4.76 MB) - Primary Download Site | Alternate Download Site Part 6: setup.exe.006 (4.76 MB) - Primary Download Site | Alternate Download Site Part 7: setup.exe.007 (4.76 MB) - Primary Download Site | Alternate Download Site Part 8: setup.exe.008 (4.76 MB) - Primary Download Site | Alternate Download Site Part 9: setup.exe.009 (1.27 MB) - Primary Download Site | Alternate Download Site Step 2: Download the utility program to merge all 9 files into one setup package. Merge_HEC-RAS_Parts.exe (80 KB) - Primary Download Site | Alternate Download Site Step 3: ·Make sure that the 9 parts are in the same folder as the utility program. ·Run Merge_HEC-RAS_Parts.exe ·After the program is run successfully, you will have a file named setup.exe in the same folder as the utility program. This setup.exe is identical to the Full Setup Package.

HEC-RAS 3.1.3 Documentation:

Download HEC-RAS 3.1.1 (19MB) Download HEC-RAS 2.2 (8MB)

Tài liệu hướng dẫn:

HEC-RAS User's Manual

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Ch1.pdf Ch2.pdf Ch3.pdf Ch4.pdf Ch5.pdf Ch6.pdf Ch7.pdf Ch8.pdf Ch9.pdf Ch10.pdf Ch11.pdf ch12.pdf ch13.pdf Ch14.pdf Ch15.pdf Ch16.pdf Appen_a.pdf Appen_b.pdf Appen_c.pdf

Hec Ras 4.1

HEC-RAS Hydraulic Reference Manual

The .pdf extension is associated with Adobe Acrobat Reader 5.0. You must use Adobe Acrobat Reader 5.0 or later to properly view these files. Go to the
Adobe Acrobat website.