• Re: Digging simulation

That's purely related with numerics. Pyhsically, K values of 0 m/s means no flow. The only way to represent no flow is to deactivate elements. In a physical context, the deactivation of elements and K values of 0 m/s is the same. From the internal computation point of view it's different.
• Re: Digging simulation

If you impose Dirichlet Boundary Conditions (fixed heads or seepage faces) you can use the corresponding nodes for budget calculation. Use the Rate / Period Budget panels or the Budget History Charts.

The Subdomain Boundary Rate / Period Budget panels only work if the excavated area is not represented by inactive or deleted elements.
• Re: Saltwater !!

Thanks Peter. I fully agree.

Dear razipv,

Unfortunately, I cannot provide a detailed step-by-step manual. Instead, I can provide an answer to your specific question. If you are interested in a detailed step-by-step manual, I suggest a training course.

We will start our online training course sessions soon. For me it seems that [b]Module E: Introduction to density-driven flow for mining applications[/b] could address your interest. You may find further information on the training flyer:

Thanks,
Björn
• Re: Saltwater !!

I am sorry. I think I did not fully understand your question. You may find a description of the density ratio here: http://www.feflow.info/html/help71/feflow/mainpage.htm#t=09_Parameters%2FMaterial_Properties%2Fflow_parameters.html%3Frhhlterm%3Ddensity%2520ratio%26rhsyns%3D%2520. If this does not answer your question, please provide more details.
• Re: Demo video on Evapotranspiration

You need to address the nodes of the first slice. Under the assumption that the head located at Slice 1 represents the water level you may implement the attached schematic expression in your more complex expression. Please also note the units in the Expression Editor.
• Re: Saltwater !!

In the Data panel, please right-click on Fluid flow just below Boundary Conditions (BC) and choose Add Parameter from the context menu. Finally, choose Hydraulic-head BC (Saltwater).
• Re: Mass imbalance in transport model (FEFLOW 7.0)

Yes, the mass imbalance in the Rate / Period panels is the way to assess the imbalance in the mass budget. In contrast, the fluid imbalance in the Rate / Period panels is the way to assess the imbalance in the fluid budget.

Perhaps the following discussion may help you to reduce the imbalance: http://forum.mikepoweredbydhi.com/index.php?topic=2263.msg5246#msg5246
• Re: Export 2D Mass concentration to VTK

There are no updates related with the VTK/VTU-writer. Accordingly, I suggest to write a FEFLOW plugin in C/C++ or to write a Python script. The file format description is quite complete:

If you want to visualize water levels I suggest to write the pressure in the vtk-file. You may retrieve the pressure from the FEFLOW API. Here is an example in Python which shows you how to retrieve the pressure.
[font=courier][color=blue]
for node in range(0, doc.getNumberOfNodes()):
print doc.getResultsFlowPressureValue(node)
[/color]
[/font]
In Paraview, apply the contour filter (https://www.paraview.org/Wiki/Beginning_Filters#Contour_filter) with a value of 0 kPa on the pressure array.
• Re: 3D Leapfrog Model Import

You need to generate a finite element mesh composed of tetrahedral elements. The geological model in LeapFrog is not finite element mesh. Instead, it is a geological model. Triangulated surfaces in 3D space may represent external boundaries and internal boundaries as such as geological interfaces or faults.

An overview about the generator properties is provided here: http://www.feflow.info/html/help71/feflow/mainpage.htm#t=07_MeshGeneration%2F3D_Meshing%2Ftetgen.html
• Re: Demo video on Evapotranspiration

Could you please provide the mathematical dependencies by means of an equation? If the math you are interested in is clear for me, I may assist you with a workflow.