Denim Umeshkumar Anajwala

Please contact our sales team at sales@dhi-wasy.de. They will ask the PhD student for  a short description of the planned work and application of FEFLOW. If this seems an interesting application for DHI-WASY, we might be able to provide a time-limited license without cost. It will be required, however, that we receive a short summary of the work after finalizing it, and that we may use this for advertising purposes.

The time-varying data are stored independently of what you see with 'Show'. For seeing these, you have to use 'T-List' instead. As soon as time-varying values exist FEFLOW will no longer use the time-constant distribution that can be visualized with 'Show'. However, the time-constant distribution can be used to edit and input values for single time stages of the time-varying dataset.

If you set the first layer to fixed, it will be simulated as confined. Free & movable will assume an unconfined layer, moving the mesh vertically to adapt the top of teh model to the water table.

You'd have to choose 'unconfined' and then make the corresponding settings for each of the slices. Please have a look at the FEFLOW help system for an explanation of the different settings.

Yes, in the lower right corner of the result viewer window there is an export button for the diagram data points.

Dear Nils,

yes, you can calculate this energy amount by using the Budget Analyzer, but not directly.
You have to calculate separately the budget for both nodes (use the "Save results in protocol file" option).
Afterwards you can calculate the energy transfer by using the differences between both results (e.g. using a table calculation program like Excel).

Even simpler it is to assign observation points to the in/out nodes and work directly with the temperature result.

Kind regards
Wolfram

Dear Peter,

in the following is a short description of how to install a dongle on a Linux system.
If the installation-problem persists please contact [email]support@dhi-wasy.de[/email].

As an important  prerequisite the USB file system (usbfs) has to be mounted!
e.g. by
$mount –t usbfs none /proc/bus/usb/
Possibly the dongle demon has to be started (again) afterwards manually by:
/etc/init.d/aksusbd restart
For continuous operation it is necessary to modify /etc/init.d/boot.local the entry for the usbfs with "mount -a"  to assure that the usbfs from fstab is mounted automatically.
The dongle drivers are available from:  [url=http://www.feflow.info/download/FEFLOW/linux/hasp/]http://www.feflow.info/download/FEFLOW/linux/hasp/ [/url]
See also [url=http://www.pdesolutions.com/discus/messages/4/1661.html?1148534142]http://www.pdesolutions.com/discus/messages/4/1661.html?1148534142[/url]

HTH
Kind regards
Wolfram

The required element size and node/element number highly depends on the spatial degree of accuracy you need. While for a regional study looking at the overall water balance large elements may be sufficient, for detailed applications a more dense is required. There is - and cannot be - not a general rule of thumb.

Hello Nils,

anisotropy is only applied for the solid heat conductivity, of course.
The value assigned for the solid heat conductivity is the value in x/y-direction.
If heat conductivity is 10 W/m/K in x/y you just have to enter 10. If it is 0.1 W/m/K in z-direction the anisotropy factor then has to be 0.01.

Kind regards
Wolfram

Dear Nils,

from my point of view you should use 2D vertical elements for the outer ring and a 1D vertical element for the inner pipe.
At the bottom of the BHE you can connect both units with horizontal 2D DFEs.

As boundary conditions (flow) a 2nd kind flow BC at the top of the inner pipe (inflow) and a 1st kind flow BC at the top of all nodes of the outer ring should work. For the temperature solely a 1st kind BC at the inner pipe has to be defined.

Kind regards
Wolfram