If you are a Windows 8 user and you are having trouble getting HEC-RAS Version 5.0 beta to work, Window’s Program Compatibility Troubleshooter may solve the problem. Problems usually arise when pressing the compute button. One common message that pops up is “Error starting process. Steady file not found.” The Program Compatibility Troubleshooter will fix […]
RAS Mapper is a window in HEC-RAS that allows you to preprocess 2D areas, map results, and manage background images. In future versions of HEC-RAS, RAS Mapper will become more and more prevalent in our HEC-RAS modeling experience. As I understand it, eventually RAS Mapper and the geometry editor window may merge to form the […]
In advance of the final release of Version 5.0 (hoping for this summer), HEC has released its 2D Modeling User’s Manual, written by Gary Brunner, the HEC-RAS Team Leader. This manual contains updates to all of the information that was put out in the previous guidance document, “Combined 1D and 2D Modeling using HEC-RAS” as […]
Continuing on with the discussion on leaking in 2D meshes, I want to highlight a new feature that will be included in the full release of Version 5.0 (hopefully due out early this summer). The new feature, 2D Area Breaklines, will make aligning cell faces on to high ground features a snap! Essentially, you draw […]
To follow up my post on fragmented inundation, I want to highlight another 2D mesh issue we should all be aware of. Unlike fragmented inundation, which is an artifact of how HEC-RAS discretizes the 2D domain and the way it maps the results, Leaking is a result of terrain features not aligning with cell faces […]
Many of us were hoping to see the official release of HEC-RAS version 5.0 around now (end of Feb, early March, 2015), but unfortunately there have been some delays due to a large amount of bug fixes and HEC won’t be releasing it as planned. I haven’t been provided with a new date, and I […]
(Initial post 19 Feb., 2015. Updated 20 Feb., 2015). I continue to be more and more impressed with how user-friendly and robust the new 2D feature is in HEC-RAS. However, there are some issues to be aware of, particularly in how results are mapped. I want to take the next two blog posts to highlight […]
Don’t miss out on these opportunities to be among the first to get training on HEC-RAS 2D! 2D Free Surface Flow Modeling SANCOLD 2015 Conference in Pretoria, South Africa. February 2-6, 2015 http://www.sancold.org.za/images/2D_Free_Surface_Flow_Modeling_Course.pdf Two-Dimensional Modeling using HEC-RAS ASCE Live Seminar, Tampa, Florida USA, February 25-27, 2015 http://mylearning.asce.org/diweb/catalog/item/id/242087/q/c=79&q=hec-ras&t=2122&t=2115 2D HEC-RAS Workshop Floodplain Management Association, McClellan, California, […]
There have been many questions lately about whether HEC-RAS 5.0 can perform a simulation with ONLY a 2D mesh (i.e. no cross sections). The answer is yes. In fact, in many ways it’s a lot easier. In this example, the standard Muncie project offered by the Hydrologic Engineering Center has been converted first to SI […]
Let’s say you have a digital terrain model of the area you want to model with 2D HEC-RAS. ONLY 2D RAS. In other words, you want to lay out a grid, but do not want to have do to any 1D computations-all 2D. The problem is the area you want to model includes one or […]