How to Model Pipe Flow in HEC-RAS 6.6

For the first time, HEC-RAS can model pipe flow networks thanks to the new beta Pipe Network feature in version 6.6! This video provides a step-by-step guide on setting up and running a pipe flow network simulation, from creating and attributing network data to running a stormwater simulation and visualizing results. This game-changing feature is a must-see for HEC-RAS and stormwater modeling professionals. Watch to discover powerful new possibilities for the future of hydraulic modeling!"

[@antonrs6065]

Hi, I am the primary developer for RAS Mapper, I made a lot of the map interaction, mapping results, profile and hydrograph plots for stormwater pipes. Great job on covering how to model stormwater pipes in RAS, you hit all the major points.

[@learnhec-ras5762]

Thank you! I'm really impressed with how smooth the functionality is with the beta release! Great job to you and all the HEC folks for pushing the boundaries of hydraulic modeling! It's an exciting time to be a modeler!

[@mohamadazzam1711]

Please share some tips

[@gfunkstube]

This is fantastic. Great video. I'm a stormwater designer and work with both SWMM and HEC-RAS. The recent development in 2d modelling capabilities have really taken the type of open channel modelling we can achieve to another level. We investigate urban flooding issues which often involve both networks and open channels and on many occasions have utilized swmm outputs as inputs into our HEC-RAS modelling. However, now with these additional capabilities we should be able to get the best of both worlds. It will speed up our workflow and should also produce more accurate results.

[@Aldoodgrgr]

I am about to take a course in PC SWMM with IHE, do you advise me to cancel the course as I am fully aware and skilled with Hec Ras? Waiting for your advice. Thank You

[@gfunkstube]

@@Aldoodgrgr Hi, youtube comments are probably not the best place to request such advice nor to give it. However, I would comment that although there is some cross-over in capabilities, SWMM and HEC-RAS are different software packages with generally different purposes. It is horses for courses meaning that for any given modelling exercise, you should use the most appropriate package for the type of system you are assessing and what information you have at hand. For instance, with these new capabilities, would I use HEC-RAS in place of SWMM for piped network analysis? Absolutely not, nor would I consider this to be a goal of the introduction of these capabilities. I have not yet myself had the opportunity to use the package, but one advantage would appear to be that it can provide some 2d capabilities in urban areas where piped networks are the predominant drainage system (which other SWMM packages also offer - though at a price). This doesn't mean you should use it instead of SWMM though. The benefit here is that this will allow HEC-RAS modelling to be complimented by SWMM modelling not to replace it. I would say that the key benefit is that the introduction of piped systems will enable the catchments of urban drainage areas to be represented more accurately which in turn should ensure that a more robust method of determining the dynamic outflows of piped systems into open channel systems improving modelling outcomes for open channel systems in these types of catchments.

[@Aldoodgrgr]

@gfunkstube Thank you a lot for your clarification. I fully appreciate that

[@Lasereyes87]

Great video

[@santiagopuerta8225]

Great video! Thanks for sharing

[@azzamkm]

Thank you - Please expecting more examples

[@tomng9604]

Nice demo. Can you compare model results with pipes and without pipes to see how big the difference is? Thank you

[@janky14x]

Would you say HECRAS 6.6 is a viable and reliable alternative to software like PCSWMM?

[@thaihung812]

I am trying to simulate a 1D pipeline along with a 2D Mesh, but I encountered this error "1d Post Process Skipped hecras"

[@alshafi-h4d]

Hello, I am a new developer for RAS Mapper. Can I have your email ID to communicate?

[@fcernst]

I keep getting this error when trying to save Attribute edits to Nodes from an imported EPA SWMM file: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.NullReferenceException: Object reference not set to an instance of an object. and this one: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index