Webinar: Dam Breach Modelling Colleagues- I’m honored to join Krey Price and Bill Syme in presenting a brief webinar on dam breach modeling hosted by ICEWaRM and the Australian Water School. Half hour presentation followed by discussion and a Q&A session. Please join if you can. http://www.icewarm.com.au/australian-water-school/short-courses/course/dambreak-modelling/ A vigorous discussion with a group of highly […]
Dam breach course in New Zealand and Round 2 of HEC-RAS 5.0 2D courses across Australia! We had a great turnout for our first HEC-RAS 2D course in Melbourne back in April, and I’m excited to be returning to the southern hemisphere in November to teach a 3-day HEC-RAS Dam Breach course to be […]
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 […]
Just ran into an interesting phenomenon. I was running a dam breach model with fairly typical breach parameters and piping failure mode. After the peak of the breach hydrograph, there appeared a mysterious “spike” as shown in the figure below. This happens to be right at the same time the flow through the developing breach […]
By using the Mixed Flow Regime option for Unsteady Flow Analysis, RAS can better handle transitions from subcritical to supercritical flow. This option should be utilized only after determining that a mixed flow situation exists, which requires judgment from the modeler. One application where this could be particularly useful is dam breach modeling, or any […]