Steady vs unsteady flow in HEC-RAS (When to use the unsteady flow module)
This video is Legacy Tale No. 97090, November 2009, in Prof. Victor M. Ponce's website ponce.sdsu.edu . This video compares the steady and
unsteady flow modules of the U.S. Army Corps of Engineers' HEC-RAS model. The video answers the question: When should the unsteady flow module be used in lieu of the steady flow module? The conclusion is that the use of a dynamic wave (unsteady flow module) for the calculation of stages in the design of channel improvements projects does not appear to be warranted.