• Batch file

    When using a batch file command-
    is it possible to determine the 'time step between output'
    like it is done at control output menu?
  • Feflow explorer movies

    a bit silly question-
    but every time i try to make a movie
    the model is spinning, rotating etc.
    i want to make it static (i.e. not moving)
    what is the proper way of doing so?

  • Re: locating problem elements and -nodes in the mesh

    Tks, the idea with the export to GIS first and then look for the node number is very good and useful workaround.
  • Question on the proper manner to define ...

    Simple question.

    How should I represent a passive (i.e. gravity drainage) drain in FEFLOW?

  • locating problem elements and -nodes in the mesh


    I am runing a model with PEST and I'm getting some error messages concerning problem domains of the model where the hydraulic head is falling beneath bottom. After finishing the run I try to find the problem domains in the mesh but don't know how to rapidly locate a certain element or node. 
  • Re: export of supermesh files (SMH) to ESRI Shapefiles (SHP)

    Many tks for the hint. I just try it out and write again afterwards.
    I downloaded the Patch No. 9 and after installing it and restarting Feflow the export function works.
    Tks again for the rapid support. :)
  • Re: export of supermesh files (SMH) to ESRI Shapefiles (SHP)

    Hello Peter,

    I am using 5.207 Version and just tried again because I try to start a PEST calibration and I wanted to use the created polygons. I have them in smh and shp format but no ply.
  • Re: Representing drains


    Thanks for your reply.

    A few follow-up questions and comments.

    1. You say that for a particular element, the "mean" conditions of the nodes on that element are used such that if I have an element with one node possessing a large inflow, then the in transfer coefficient will be used. I do not understand this since I have assigned a value of zero to the in transfer coefficient to all elements in the model. A non-zero out transfer coefficient is used for all elements, on all layers in the neighborhood of the drain. So even if there would arise an in-flow, q_in = -phi_in * (h_R - h) = 0 * (h_R - h) = 0.

    2. I've tried using a maximum flux constraint of Qmax = 0. This works much better although I still see flow from the boundary into the model domain at very small (10-4 m3/d) rates. I can live with that. The problem with this approach is that the model runs VERY slow, for example, 63 hours to simulate 5 days. This is unacceptable when I need to simulate at least 60 days. Can you suggest anything to speed this up?

    3. Have I defined the drain properly? I have defined h_R = z, h_min = z, both time constant.

    If the head in the aquifer, h, is greater than the head assigned to the boundary (h_R), there should be out flow, that is, flow from the model domain into the boundary, the normal drain operation.

    For the reverse condition, equation 14-7 of the White Paper says q = 0 when h_R(t) = h_min(t) AND h(t) < h_min(t). This is what I expect a drain to do, that is, become inactive with Q_in = 0 when h < h_R (= h_min).

    What happens in the normal case since I have h_R(t) = h_min(t) AND h(t) > h_min(t)? Is the flux calculated by: q = -phi_out * (h_R - h) or does the contraint condition apply such that q = q_min = -phi_out * (h_R - h_min)?


  • Re: export of supermesh files (SMH) to ESRI Shapefiles (SHP)

    That sounds similar to what happend to me recently.

    I used the SMH tools to create a number of polygons then exported these into a polygon file. On one computer, it worked perfectly. On another, I see a DOS window flash by followed by a message box confirming the export. However, no polygon file is created.

    I haven't had time to follow through on this to figure it out.
  • export of supermesh files (SMH) to ESRI Shapefiles (SHP)

    I tried several times to export a supermesh created in Feflow to a shapefile. I get no error message, but nothing happends. The same to ply-file. Only the export to dxf and to poly worked, but I need a shp-file. The import of the DXF into ESRI-GIS also didn't worked. Is there a bug in Feflow concerning this export of smh-files or am I doing somethig wrong? I tried to export a simple smh-rectangle and it dind't work.

    I would appreciate any help. Tks. in advance