February
Thursday 1 March 2018 photo 44/45
|
Hec ras tutorial ppt: >> http://wkw.cloudz.pw/download?file=hec+ras+tutorial+ppt << (Download)
Hec ras tutorial ppt: >> http://wkw.cloudz.pw/read?file=hec+ras+tutorial+ppt << (Read Online)
hec ras tutorial pdf
hec ras introduction
hec ras 5.0 tutorial
hec ras tutorial video
hec-ras example problems
hec ras user manual
Hydrology & Hydraulics for. Bridge Design. Bridge Hydraulics Overview. Topics for this presentation: Item 1 – Design discharges (Hydrology). Item 2 – Channel & Bridge Characteristics. Item 3 – Hydraulic Analysis using HEC-RAS. Item 4 – National Flood Insurance Program. Item 5 – Scour Analysis & Channel Protection.
Conclusions. ? Both 1D and 2D works well and easy to set up. ? 2D advantages: more stable, better flood extents, good result resolution. ? 2D limitation: ? Bridges can only be modelled as weirs for high flows. ? Velocity resolution is low. ? Modelers should have good GIS background. ? Still need 1D channel data to modify.
Lecture 7: HEC-RAS and Geo-RAS. March 6, 2006. HEC-RAS. River Analysis System; Developed by Hydrologic Engineering Center (HEC); One dimensional steady and unsteady flow analysis; Subcritical, supercritical, and mixed flow regime calculations. HEC-RAS cont. Manual Data Input Required. stream centerline
WS 100 yr. Ground. Bank Station. www.hec.usace.army.mil/software/hec-ras/hecras-hecras.html. Software for Steady-State Water Surface Profiles. HEC-RAS analyzes networks of natural and man-made channels and computes water surface profiles based on steady one-dimensional flow hydraulics. includes.
8 Sep 2013 HEC-RAS is a computer program that models the hydraulics of water flow through natural rivers and other channels. The program is one-dimensional, meaning that
Hydraulic Routing in Rivers. Reference: HEC-RAS Hydraulic Reference Manual, Version 4.1,; Reading: HEC-RAS Manual pp. 3-1 to 3-13. www.hec.usace.army.mil/software/hec-ras/documentation/HEC-RAS_4.1_Users_Manual.pdf. Flood Inundation. Floodplain Delineation. Steady Flow Solution. Right Overbank.
Other Features of HEC-RAS- part 2. Cross Section Interpolation; Multiple Plans; Supporting in velocity head is large. HECRAS detects this by comparing conveyance values between two sections. HEC-RAS Version 3.1. March 2003 HEC-RAS - Multiple Plans. Suggested Reading: Chapter 5 of HEC-RAS User's Manual.
HEC-RAS Version 3.1. In Line Structures. Can be used to model in-line gated spillways, overflow weirs, drop structures, and dams. Modeling method is very similar to bridges and culverts. Weir shapes are Chapter 6 of the User's Manual provides explanation for the various fields of the Inline Gate Editor. Gate openings
Guidance Documents. HEC-RAS Hydraulic Manual. HEC-RAS Applications Guide. HEC-RAS Users Manual. FEMA Guidelines and Specifications. Michael Baker Corp. PowerPoint. www.dnrc.mt.gov/wrd/water_op/floodplain/fp_eng_101 · /3-lomc-lomr.pdf
HEC-RAS utilizes the Standard Step Method: • Iterative computation of water surface elevation between two known cross sections. • Steady flow. • Does not require uniform cross-section or channel conditions. • Requires known channel cross sections along reach. • Computation of energy equation section by section.
Annons
Visa toppen
Show footer