Hey RAS Users. HEC just put out this very informative document that helps and guides the modeler with the decision between building a steady versus unsteady model, as well as when to go with a 1D, 2D, or 3D model. Modeler Application Guidance for Steady vs Unsteady, and 1D vs 2D vs 3D Hydraulic Modeling. […]
Mark Forest is one of the most knowledgeable H&H modelers I know. He’s also a very experienced RAS modeler. Here he discusses the benefits of the relatively unique subgrid bathymetric approach to terrain surface discretization that HEC-RAS uses, specifically on the topic of computational mesh cell size. Read this. Then read it again. This is […]
JBA Consulting will be hosting another HEC Software Workshop this summer. Back for 2017 25 – 27 JulyCCT Venues, Barbican, London EC1 This is the second software workshop in Europe dedicated to the HEC hydraulic and hydrological modelling software – HEC-RAS, HEC-HMS, HEC-DSS and HEC-ResSim. We are working with the team at Hydrologic Engineering Center plus other […]
*Update: Please note that HEC has removed HEC-RAS Version 5.0.2 from their website due to the discovery of a significant bug. A newer version (5.0.3) will be posted soon. Stay tuned… HEC-RAS Version 5.0.2 is now available to download from http://www.hec.usace.army.mil/software/hec-ras/downloads.aspx In addition to a number of bug fixes there are some new features. Here are […]
In case you haven’t seen it, there has been a very popular LinkedIn discussion on the Hydraulic/Hydrologic Modeler’s Forum debating the advantages, disadvantages, and merits of HEC-RAS 5.0, TUFLOW, and DHI’s MIKE21. There was a lot of great information (and some misinformation) and insight provided in that thread. It is well worth the read. Some […]
HEC recently published a new training document called “Using HEC-RAS for Dam Break Studies”. Written by Gary Brunner, P.E., D.WRE, it is an easy to follow guide for performing Dam Break simulations in HEC-RAS. It covers topics like: Which routing technique to use to route flows through your reservoir (Dynamic or Level Pool-although I wish […]
HEC has just released an updated beta version of HEC-RAS 5.0. This is the third and final beta release before the final release due out in January 2015. This new release takes care of most of the bugs that have been reported and includes some nice new features like spatially varying Manning’s n values for […]
This is a great presentation put together by Mr. Steven Piper of the Hydrologic Engineering Center that discusses in detail the use of “Rules” at inline structures. Dr. Michael Gee forwarded this presentation to me after seeing some discussion on the forum about the use of Rules for inline structures. Thanks for the suggestion Dr. […]
Just heard that HEC-RAS Version 4.1 is due out in about 1 week. I thought I’d take this opportunity to post the Version 4.1 Release Notes to give you all a sneak peak of what’s to come. Check the HEC website in the next week or so for the official software release. Hydrologic Engineering CenterRiver […]