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calberts

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Everything posted by calberts

  1. calberts

    Scatter - Disjointed vertices

    JKM, As you are to the point of running the model and already have a mesh created, the scatter set won't have any influence on the model since the elevations from the scatter were a piece of the mesh building process. The main thing you would want to verify is that if the scatter set does have problems, those problems have not been transferred to the mesh. If you review your mesh and all looks good, then the -999 values for the WSEs likely are caused by something else. You could review the materials coverage to make sure you have materials polygons covering the entire extents of the mesh and that those polygons have a material type other than "unassigned" that have been assigned to them. Aside from the materials, the only other thing I can think of is that the model possibly needs to be ran for a longer duration of time? Let us know! -Cody
  2. calberts

    NLCD

    B. Horrocks, The .img file that comes with the .rrd file you downloaded is supported by WMS and can be loaded in. However, due to the size of the file you will run into a snag when converting the .img to a native land use grid that WMS can use for computations. If you can crop the raster down to your area of interest using an exterior GIS program, that would be necessary. This is assuming you want to use the NLCD 2011 data. If the land use in the area you are working in hasn't changed much since 2006, WMS can download a cropped subset of the NLCD 2006 data by using the web services. I'd recommend using the Get Data From Map button and selecting it from the list of web services that pop up. In the near future WMS 11.0 will be released to a beta version. In that version the same capability described for the NLCD 2006 data will apply to the NLCD 2011 data, which will make it much easier to use the 2011 data. -Cody
  3. calberts

    Use Raster file as a Landuse file in TUFLOW

    Fahad, Currently, SMS only allows the specification of materials for TUFLOW as polygons. It is possible that there may be a way to manually modify in the input files after SMS has written them which will allow you to use a raster file. So you may want to post this question on the TUFLOW user forum as well and see what suggestions you get from them. https://www.tuflow.com/forum/ -Cody
  4. calberts

    Erosion Depth not additive between simulations?

    Isaac, If I'm not mistaken, that may just be another way to tell SRH that you want to use a restart file. I have never done it that way, but from the manual it appears that you want to do either "IREST=0" for no restart file or "IREST=1" to use a restart file. You would then have a file alongside the simulation .DAT file which matches the casename of the .DAT file but has an "_RST.dat" at the end of it. Below is a snippet from page 91 of the SRH Manual Either way it seems like this is just an alternate way to specify that you want to use a restart file. Let us know if it works. I still think that the restart file should have the sediment info included in it, so let us know if it does not appear to have such. -Cody
  5. calberts

    SMS - Culvert Modeling Error

    I do work for Aquaveo. Thanks for letting me know.
  6. calberts

    SMS - Culvert Modeling Error

    Thanks for checking that. SRH-2D will interpret the geometry in SI units if the horizontal projection unit is in meters. So what I believe is happening is that SRH is interpreting the ~330 ft mesh elevations as 330 meters and the TW values are much much higher than the 330 ft values in the HY8 table. I would recommend making your horizontal and vertical units consistent by using the "Reproject All" function to convert all your horizontal units to feet or all your vertical units to meters, whichever one fits the situation. After doing that you should be ok to run SRH and even raise your timestep back up. -Cody
  7. calberts

    SMS - Culvert Modeling Error

    One thing I notice is that the reported Max TW in the error message is 108.21 and the culvert definition inverts are defined as ~330. This is roughly about the conversion of meters to feet. Is there a chance that your mesh projection and display projection are set to meters for the vertical unit?
  8. calberts

    Model is giving all output value zero

    I am glad you are seeing better results. For best results, when creating your domain coverage you should create it within the areas you have elevation data (TIN or Raster). If there are areas where you slightly go outside of the TIN edge there is an option to "Extrapolate" elevations for areas outside of the elevation data using an IDW interpolation. That is found in the "Scatter Options" when you are assigning a scatter data set for the mesh generator polygons. Please keep in mind, that is an extrapolation of data and that if large portions of the domain coverage are outside of the TIN or areas of interest are outside of the TIN this will not be a good representation of those areas. You can view the number of elements by selecting "File | Get info" and then clicking on the "Mesh module" tab. I do not currently have any document to share on the time step. In the future there will be a guidance document available online that will have more information about selecting a time step. Typically most models use a time step between 1 and 5 seconds. There are cases where lower or even higher time steps may be used but you should always review the 2D results as well as any structure output data files (if applicable) to make sure everything is hydraulically stable. -Cody
  9. calberts

    Erosion Depth not additive between simulations?

    Isaac, Restart files should include information about sediment transport. If you are not seeing that behavior, let us know what version of SMS you are running SRH-2D with and we can perform some additional tests to ensure that everything is working in the current release of SRH-2D and SMS. -Cody
  10. calberts

    Model is giving all output value zero

    Shahidul, Which version of SMS are you using? I ran the simulation with SMS 12.3 and it is giving results consistent with the input parameters. -Cody
  11. calberts

    Confusion in domain creating

    In addition to Donald's comment, an additional method would be to switch to the scatter module, and select Interpolate to Map. This will interpolate elevations from the active scatter set to the nodes and vertices of arcs in the active map coverage. -Cody
  12. calberts

    Model is giving all output value zero

    Hi, It is hard to say what may be causing the issue you are describing. You might investigate why the boundaries are irregular, but I would not expect those to be the cause of all output values being zero. Could you also give us a screenshot of the model in plan view with your BC coverage displayed? One thing you may want to check is that your materials polygons all are set the way you want them, if a materials polygon is left as the default of "Unassigned" or if there are areas of the mesh which do not have materials polygons covering them, then those elements will be inactive for the run. -Cody
  13. calberts

    Monitor Line Numbering

    Hi Phillip, For now in SMS 12.3 and previous versions, the ascending order of the IDs for the monitor lines will match the ascending order of the file name index values in the LNn.dat files. In the next major version release (SMS 13.0) the arc ID will match the file name index values, making it easier to correspond the two. -Cody
  14. calberts

    2D Flow Over Culverts

    You are right, the 1D overtopping as well as the computed 2D pressure flows would be for all flow traveling in the direction of the culvert flows. Your parking lot flow traveling perpendicular to the structure would not be represented how you would want it to be with a pressure flow structure. -Cody
  15. calberts

    2D Flow Over Culverts

    The elevations of the 2D elements should represent the elevation of the channel beneath the bridge deck. The parameters specified in the structure will define the deck low/high chord elevations. -Cody
  16. calberts

    2D Flow Over Culverts

    Phillip, 2D pressure flow areas are actually different than culverts by nature. They actually don't deactivate the elements between the structure faces but rather act as a ceiling through which water can pass under, all the while keeping the 2D computations continuous while adding pressure flow computations to the region. There is an optional 1D component to the 2D pressure flow structures for computing overtopping which uses weir equations. This 1D component will not deactivate elements through the structure. -Cody
  17. calberts

    2D Flow Over Culverts

    Hi Phillip, You are right, the elements between the culvert faces are disabled and act as a barrier to flow. Another option for you would be to instead use a "Link" type structure which would not disable elements between the faces of the structure. Within the Link setup parameters you can specify a rating curve as the inflow type. Outside of SMS, if you open the HY8 file within the HY8 program and then go to the crossing properties, there is an option to view the rating curve data if you supply the discharge and tailwater data to the crossing definition. This method can work well as long as you can reasonably represent the hydraulic conditions around the culvert with a simple rating curve. An example of where this method would not work well is if the hydraulic conditions were tidally controlled. -Cody
  18. calberts

    Sediment materials is missing in SRH-2D model type.

    Hi Shahidul, The full sediment transport capabilities were not fully supported in SMS until the release of SMS 12.2. To access that coverage type, you would need to be using SMS 12.2 or 12.3. https://www.xmswiki.com/wiki/SMS:What's_New_in_SMS_12.2#SRH-2D -Cody
  19. calberts

    Satellite image doesn't match with scatter data.

    Shahidul, You can set the projection by selecting "Transverse Mercator" as the projection and then entering the projection information that you have listed (see below). The datum you have listed does not appear to be in the library list of datums. In that case, there could possibly be one in the library that is a close match to your datum or you could define your own datum by selecting "Add Datum" and setting the datum parameters. -Cody
  20. calberts

    Satellite image doesn't match with scatter data.

    Hi, It definitely looks like there is a projection issue with one of the pieces of data. Whenever I have similar issues, the first step I take is to locate which of the two is actually in the correct location. The easiest way to do this is to load in a dynamic map to provide a reference for where things are located. To load in a dynamic map, select "Add online maps" from the "Web" menu and choose "World Imagery" or "World Street map". SMS will display a dynamic map that updates when you pan around and zoom into the display. After you have located which one is correct, double check the specified projection on the one that is wrong by right clicking on it and checking the object projection. If the object projection of the object in the incorrect location seems correct, then more investigation is needed from the source of that data. Sometimes there are conversion factors such as a shift or scaling that must be applied, speaking to the surveyor or person that generated the data can sometimes clear that up. If after investigating the source of the data doesn't resolve the issue, then a trial and error process of manually shifting the data by applying either scale factors or X and Y shifts will be required. Most projections parameter fields that you can adjust within the projection (see below). -Cody
  21. calberts

    Extracting Flow Depth Time-series

    David, If you have not already figured, this out. I agree that looking at the depth contours is may be the best idea. You can customize the contour interval and range to a desirable setting. (i.e. you can modify the contour options to create a single contour line at the 0.001 depth) And then afterwards save out a CAD file of the contour lines by selecting File | Save as... then in the "Save as..." dialog you can change the "Save as type" to DWG or DXF. The contour line will be saved in a CAD layer for the current time step that is visible in the display. If you want to do multiple time steps, you would need to change the time being viewed and repeat the steps for each individual time. -Cody
  22. calberts

    Extracting Flow Depth Time-series

    Hi David, You may want to look into monitoring gages for the 2D grid. After you have loaded in the solution, you can use the "Create monitoring gage" tool circled in green in the image below to create a gage anywhere in the grid, such as the one shown circled in red. Then, you can use the "Select monitoring gage" to double click on the gage and it will display a plot for the 2D grid dataset, such as the one displayed in the image. Now, unfortunately this does not exactly give you a rate at which the depressions are filling, but it does show the computed depths on the cell over time so it does give you an indication of what is going on in the cell. For the second inquiry, I am not sure that I know exactly what kind of built in tool you are thinking of for visualizing the connectivity. Could you provide a little more detail on what you are wanting to see? It may be that there are already other ways to accomplish what you want to see. -Cody
  23. Jim, As a follow-up, is it that the triangles that are automatically generated are undesirable and you have to delete them and create the triangles by hand? You may consider using breaklines, which can allow you to easily control the triangulation to force the triangles to behave how you want them to. Here are a few links on breaklines that may be helpful: https://www.xmswiki.com/wiki/SMS:Breaklines_Workflow https://www.xmswiki.com/wiki/SMS:Breaklines -Cody
  24. Jim, I see that we have an option for the opposite of what you want (when a vertex is deleted we can specify whether SMS retriangulates the void or not) in the Scatter Options of the Scatter menu. However, I am unaware of an option to specify whether SMS retriangulates when adding a vertex. I have submitted a feature request to our development team for them to consider adding this as an option to future releases. -Cody
  25. Hi Jim, The .map file contains the materials coverage. If you load that into the new project it will load in all the map coverages that were included in the original project and you can delete the ones you don't want. In SMS 12.2, the limitation to this method is if the materials coverage is one of the coverages that use the new dynamic model interface (DMI) such as an SRH-2D materials coverage, the attributes and coverage type will be lost and only the polygon geometry will be loaded in. You can easily get around that DMI limitation and ensure that the attributes are preserved in one of two ways: The first way is nice if you are starting a new project from scratch. You would make a duplicate of the project you are working on, open the duplicate and delete out all the stuff you don't want in the new project you are building, except for the materials coverage. This will ensure that none of the materials attributes The second way is nice if you already have a project and you just want to add a new materials coverage. You would select the materials coverage to make it the active (bolded) coverage, select File | Save as... and then change the Save as type to "Shapefile". In the export options you will select Feature Polygons -> Polygon Shapefile. This will create a polygon shapefile that can be opened in the new project and converted back to a map coverage by right clicking on it and selecting Convert | Shapes -> Feature Objects. This will start open the a wizard to walk you through the conversion process. If you specify the material attribute in the shapefile as "Material" in the GIS to Feature Objects Wizard ---- Step 1 of 1window, the material type will be preserved and transferred to the coverage. -Cody
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