Overview

An introductory course to the unsteady hydraulic model within HEC-RAS.  At the end of the course the delegate should be able to construct a simple unsteady state model including off-line structures such as storage reservoirs and lateral weirs.

Who should attend

Engineers and scientists wishing to undertake flood mapping studies, breach analyses and flood storage calculations.   A basic knowledge of using HEC-RAS for steady state modelling is assumed.

Course outcomes

After the course delegates will be able to:

• Decide when to use unsteady models
• Build a simple unsteady model
• Convert steady state models to unsteady
• Undertake breach analysis
• View results
• Undertake  basic troubleshooting
• Know whether or not an unsteady flow model is required
• Introduce Routing tool
• Introduce Mapping options

Topics covered

• Principles of 1D unsteady state modelling
• Data requirements (unsteady flow files)
• Running an unsteady model and analysing the output
• Lateral weirs and gates
• Pumping stations
• Approaches to modelling floodplains: extended sector, off-line storage and parallel conveyance
• Modelling dam-breach
• HEC-RAS Routing Sections
• RAS-Mapper
• Optimal computational time step

Delivery

Presentations followed by hands-on exercises using HEC-RAS (version 4.1).

Related courses

This course is stand-alone but can also be taken together with one or more of our other HEC-RAS courses to meet your exact requirements:

• Introduction to HEC-RAS - basic primer to the steady hydraulic model
• Advanced HEC-RAS – split flow optimisation and hydraulic properties table
• HEC-RAS Master Class - increasing productivity through links to GIS and also using the hydraulic design functions

Software/publications

If you wish to purchase a copy of the HEC-RAS software please see software pages.  The textbook ‘Floodplain Modelling using HEC-RAS’ is also a useful addition to this course 

Summary

• Intermediate one day course
• A comprehensive set of course notes together with example worked solutions for the exercises will be provided
• Counts as 6 CPD/CET hours

Presenter

Jeremy Benn MA MSc CEng CWEM FREng FICE FCIWEM MASCE MEI