Welcome to the RAS Solution › Forums › HEC-RAS Help › 2D Volume Continuity

  • This topic has 6 replies, 787 voices, and was last updated 10 years ago by Anonymous.
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  • September 16, 2014 at 11:40 pm #5590
    Anonymous
    Guest

    Hi All,

    Put this in the wrong place.

    I’m hoping I can get your help with something. I’m going through a 2D model that I’ve created and run. I’d like to verify volume continuity across the model. I have considered my inflow volume, my starting volume (in the 1D elements), my outflow volume (from the 1D elements) and my final volume (from the 1D elements).

    My problem is this” I have an off-channel 2D flow area of which I would like to know the initial and final volume. How do I go about figuring this out? It doesn’t appear to be in the RAS Output Tables. My 2D areas show up as storage areas here but all the fields are blank. The storage areas are definitely being used– I can display my results in RAS mapper and water is definitely flowing into/ out of them.
    The 2D flow area is composed of thousands of cells so it seems hopeless to click into all of them.

    Thanks in advance.

    September 17, 2014 at 1:24 am #8945
    Chris G.
    Keymaster

    For now, you’re options are very limited. There is the HDF Viewer, which will allow you to see much of your 2D area output in tabular form. It’s pretty raw for this current beta version of RAS, but with some detective work and some Excel/Macro wizardry, you might be able to figure it out somehow. If you do, please email me how you did it, so I can share with the blogosphere. You can read up on the HDF viewer, including how to download it (for free) in the current 2D User’s Manual located here: https://drive.google.com/file/d/0B_s8OLJOgOi0Nm5sdHFhSzFUYkk/edit?usp=sharing

    September 18, 2014 at 4:14 am #8946
    Anonymous
    Guest

    From the unsteady run editor, go to the options menu and then select View Computation Log file. It will show the starting and ending volumes inside of the 2D Areas.

    September 18, 2014 at 8:34 pm #8947
    Anonymous
    Guest

    Thanks so much!

    September 18, 2014 at 8:37 pm #8949
    Anonymous
    Guest

    Chris-
    Unfortunately the HDF Viewer application doesn’t work at this time. If you go to the link provided into the User Manual you get a standard web 404 error (page not found).
    I tried finding another on the web but couldn’t.

    September 21, 2014 at 1:37 am #8950
    Anonymous
    Guest

    You can download HDFView from the HDF Group.
    http://www.hdfgroup.org/downloads/index.html
    You want HDFView not HDF5.

    October 9, 2014 at 1:50 pm #8948
    Robert
    Participant

    Hi jarvus,

    i am working with 1D unsteady flow. My model is stability, but i want to check of the output using of the continuity equation.

    For example:
    RS 0 m, 781.72 m3/s
    RS 395.72 m, 750.19 m3/s

    Can you help me?

    thank you very much
    Greeting!

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