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Found 3 results

  1. PTM with HEC-RAS 2D

    Does any know if it's possible to use PTM with HEC-RAS 2D outputs? In other words, can I modify the HEC-RAS HDF5 file outputs in a way that will be ready by the PTM in SMS? Thanks, -Matt
  2. Calculation of Mean Particle Size vs. Median

    The model inputs for a sediment source in PTM require a standard deviation (in phi) and a median grain size in mm. In order to generate a distribution of particle sizes you would also need a mean particle size. How does PTM (or perhaps an SMS pre-processor) calculate a mean grain size from a median grain size and a distribution? As an example I have been running a simple model to look at what the grain size distribution in the model is like and I get results like this. Model Input: median grain size: 0.088 mm St Dev. (phi): 1.22 Statistics of Model Output median: 0.0879 (mm) mean: 0.1497 (mm) How is the mean calculated?
  3. We've recently updated to the most recent version of SMS with the PTM and WAM modules, but I'm having difficulty using the PTM. I've downloaded the tutorials and example datasets for the PTM module but can only get through the first several steps before running into problems. Within the introduction example: In the Project Explorer, right click on “default coverage”. Choose Rename from the right click menu and change the name to “Placement Option 1”. Right click on the coverage and change the type to PTM. There is no PTM module available to choose from. The PTM module button is also visible at the bottom bar in SMS but not cannot be clicked on and is grayed out. After registration PTM module is reported as enabled (see attached) but doesn't work properly. I also checked the .exe location under preferences and it is directed to the proper folder. Has anyone else encountered this problem or could offer other suggestions? Thanks!
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