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. […]
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 […]
This question (or some variation of it) comes up quite a bit on The RAS Solution: “I have an unsteady flow model. When I run it, it goes completely unstable. What is causing this?” Many times a screen shot of the computation window with the dreaded “red bar” is attached. While the person asking the […]
Written by Chris Goodell, P.E., D. WRE | WEST ConsultantsCopyright © RASModel.com. 2010. All rights reserved.Everyone has their favorite references that they go to for help and guidance when developing hydraulic models. It could be the n-value table in Chow, or Tony Wahl’s Breach Parameter paper, or simply specific exerts in the RAS manuals. Whatever […]