mariaS

thanks a lot, that helped to pass it in the right direction, so the simulated hydraulic heads are now in the right convergence interval. but i actually wonder, what is the physical explanation, because maybe the right solution could also solved, when changing another parameter (like alpha or n [van-Genuchten-Parameter].

Anyone could help?

hello,

I tried to simulate an unsaturated groundwater stream into a lake. I defined 1st and 2nd BCs as transient, also material properties for conductivity, unsatureted flow porosity and defined the van-Genuchten- parameter.

Nevertheless, my simulated hydraulic heads are always about 1-2m higher then the levels on the observation points, and therefore exaggerating the confindence intervalls.

what can be the source of this exaggeration? what do I have to change in the material properties?

hello,

i´m a pretty new user to FEFLOW and I just have a big problem with my FEFLOW Software, because the plug-in panel doesn´t show the "available plug-ins"-list. It just shows the attached plug-ins , which is of course not filled with any plug-ins, because i can´t choose any.
Does anyone knows that problem and can help me solve it? I really need to check my mesh properties and also need another plug-in for the residual storage.

hello,

i´m working on an unsaturated transient 2D problem. First tried it as steady, and there the simulation went well, after adjusting the problem settings.
Now I tried it with transient information, so i put my time series in the modell.
I choose "automatic time step control" with an inital time step 0.1d , numerical parameters with 100 iterations and the SAMG solver changed to 1e-04 termination criterion.

BUT if I start the simulation, the time steps are very very small and don´t get bigger over time, so even after an hour of computing, the simulation was not finished with even the first of more than 100 days. (see picture[PDF] )

I checked the observation points hydraulic heads- they were stable.

What could be the problem? I really tried to changed SAMG solver or numerical parameters in different ways, but never got the simulation over 1 day of time.