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Found 4 results

  1. Hi there, I'm having a problem related with assigning specified flow boundary conditions to my UGrid / Modflow-USG model. The error appears when I do the '' Map to MODFLOW'' option while converting my conceptual model to UGrid numerical model. I have read the helping document saying that If you want to use ''Specified flow boundary condition'' the UGrid must be a stacked grid. A stacked grid is one in which there is no vertical discritization of layers and the horizontal discritization of all layers is the same. (i.e. the Index of Vertical Sub-Discretization (IVSD) in the UnStructured Grid Discretization (DISU) package could be set to -1) (See the Figure attached). Firstly, I did not understand what this means and how to find the IVSD in the DISU package and set it to -1 to be able to use specified flow boundary condition. In my model there are 2 groundwater divide boundaries which must be zero flow and 2 formation boundaries where the aquifer feeds from neighboring formations with a specified flow value. If I ll have to change my specified flow bound. cond. with something else or If there is a way to use them, could you please help me to find the solution? Thank You!
  2. I have a number of geological layers as TINs. They are situated at their respective depths yet when I attempt to highlight them all and convert to solid or UGRID they create multiple grids (or solids) for each layer (TIN). As I am new to the MODFLOW package, what is the simplest process for turning TINs (some do not cover the entire extent of the model) into a 3D block to model groundwater flow via particle tracking. I have attempted fill between tins and horizons, however, nearly all solids appear as below, mishapen and not extruding between the TINs as expected.
  3. GMS Crash converting shape file to UGRID

    I'm trying to convert a series of shape files to Ugrid, some files convert within a second, however, 5 do not and crash the GMS software, only sometimes offering up an error message of the following: This machine does not have enough memory to continue this operation. Save your data and exit. (xms::CMainGMSFrame::OnCommand) Ive monitored my PC when running the conversion tool and memory never really spikes during the process. I also noticed that the crash isn't dependant on the size of the shape file with both larger and smaller files crashing when compared to those that converted successfully. Restarting the machine, as well as trying a different PC doesn't appear to have much effect. Cheers
  4. Adding Layers in a UGRID

    Is there a way to split a UGrid layer into multiple layers in GMS 10.0 or 10.1?
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