HEC-RAS 6.0 beta 2 is now available!
The beta 2 release of HEC-RAS 6.0 is now available. This fixes the bug with 2D bridges in SI…
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.
written by Gary Brunner, P.E., D.WRE; Gaurav Savant, Ph.D., P.E.; and Ronald E. Heath.
HEC goes into detail about what information is required to know before making the decision between steady/unsteady and 1D, 2D, and 3D. Both knowledge about the objectives of the modeling effort as well as what the data requirements are for each of these modeling options. There’s a thorough discussion of the differences, both in theory and in practical application, between steady flow and unsteady flow modeling. There’s a chapter that compares and contrasts 1D and 2D hydraulic modeling, and another chapter that does the same between 2D and 3D modeling.
If you are a HEC-RAS modeler, this document needs to be on your (virtual) bookshelf.
You can download it from the HEC website here: