• RE: piChem error OntimeStepConstraint

    Hi Tiago,<br> If you like to discard nodes to the coupling with PHREEQC, the only workaround is to use Inactive Elements. Although, this will inactivate all these nodes entirely from the flow and mass transport calculations.<br> Regarding to the error message with the OnTimeStepConstraint, it is something unknown to DHI. I recommend you to contact us via support.<br> Finally, the automation of files used in the pIchem GUI is not supported.<br> Cheers<br> Carlos
  • RE: wells disappearing or without any flow in rate budget

    Hi Adaliyaz,
    The situation described can only happen due to the following reasons:
    - There is a boundary condition constraint (BCC) associated to the node.
    - There is a time series assigned to the boundary, e.g. with a "GAP".
    - There is a Modulation function assigned with a time series and this has a "GAP".

    (Of course, there could be a user-imported Python script doing things during the run).

    In case you have any further question, please get in touch with support (mike.de@dhigroup.com).

  • RE: How to add base flow data from a river to FePEST.

    Hi Billy,
    FePEST will recognize all nodal selections marked with the option "Budget-History charting". The option is found with a context menu of the specific selection in the FEFLOW GUI.
    Subsequently, FePEST will offer you the options Fluid Rate/Period from the Obs. Def. section in the Problem Settings dialog.
  • RE: My panel Data has no option for inactive cells

    The reason could be that you are solving the flow equation by using "Free and Movable" in the Problem Settings dialog. Inactive elements are not supported under this approach.
  • RE: Ifmlake plug-in

    Hi Robin, I would recommend you to get in touch with our technical support team at mike.de@dhigroup.com.


    Hi Joshua,
    Typically, discrete features elements (DFEs) are fully coupled to the matrix. That is the default set-up, i.e. whatever happens in the pipe, it will also happen "outside". However, the exchange between the DFE and the matrix can be controlled. I would recommend you to look the online help system: http://www.feflow.info/html/help75/feflow/09_Parameters/DFE/nodesplit.htm
  • RE: observation history (time series ) of soil moisture and saturation

    Hi Yonas,
    Your post may not have came all the way. FEFLOW supports the connection of historical data (measurements as constant and/or time series) to any observation point. Data can be linked to process variables for the flow (head, pressure, moisture, saturation), mass transport (any species concentration), heat transport (temperature) and groundwater age transport (age, lifetime expectancy and exit probability).
  • RE: ifm of in/outflow on top/bottom

    Hi Bohan

    The API is named IfmSetMatFlowRechargeValue. You can find below the documentation for both C++ and Python, respectively:


  • RE: specific storage

    Specific storage (compressibility) follows the standard definitions in hydrogeology.&nbsp;Specific storage describes the change in volumetric water content in an aquifer induced per unit change in hydraulic head under saturated conditions. Along with specific yield, specific storage describes the storage properties of an aquifer. As in unconfined layers specific yield typically exceeds specific storage by far, the influence of this parameter in aquifers with phreatic surfaces is usually negligible.<br> You can find all the parameters described in the online help:<br> http://www.feflow.info/html/help75/feflow/09_Parameters/Material_Properties/flow_parameters.html
  • RE: disapering mesh

    The most probable is that the cache file is somehow damaged e.g, saving was interrupted, etc. You can delete the *.cache file, open the FEM file and FEFLOW will recreate the cache file again. If this does not help, please contact support.