Carolina Vera

Margot

what do you want to simulate?, What important is the unsaturated zone in your model. Once I made a sensitivity analisys of parametric model and I did not obtain important differences. But my model was for saturated zone and I didn't have recharge. So I only used unsaturated model because I had two water tables.

My understanding is the budget is total in the area or slice or node where you are calculating the budget.


I hope help you

regards

Hi,
I use the same. pressure distribution. But I think is easier to manage it since the "view results" in run module or post-process module(if you has saved the results of your simulation before). iIn the view results, You need to select "isoline patter" and "lined contour" in the left box,  "pressure" in the bottom left box and in "graphics plolling contour options" you must set "reference isoline = 0" and "minimun isoline level =0", also you can select the frecuency of the contour if you want.

You should see the pressure=0 line which is the water table. 

I'm not sure but I think it connect two slice in the same layer. I mean, the lengh should be the layer thikness.

Hi all.
I’m starting with density transport modeling.
I have a very deep zone with salted water, in a very low permeability aquifer. The upper zone contains fresh water in an also low K system. The objective is study how the dense water in lower system moves toward the upper system, maybe by some structures. 

My understanding is that the Reference Mass Concentrations is that measured  in the field where the K was measured. Which value I should use if I have two different values and FEFLOW 5.0 used only 1. Does the new feflow version have the possibility to use different values?


thanks

I think Transfer rate is a similar concept to Conductance in Modflow.
Transfere rate is K/d where d in river condiction must be the river bed  thickness. then  you will have a value in [1/d]. Sortware use the element geometry to calculate conductance (m2/d).

I saw an example where they use a value of 500 [10e-4 1/d].

Hi all,
Exactly the answer that I was loking for. Thanks a lot.

But I have other question yet.
If I use the 1D discrete feature element  How a can set head restriction to the pumping?.
If is not possible I should use the a) option of Zheng and setting manually in each slice the corresponding nodes?.

thanks

Hi, it’s me again. I change my user because my password doesn’t work and I didn’t receive the mail for pass changing.

No, it was not a problem with the simulation time. It was the time-varying function setting.

I made a really simplistic example. I used a three layers model and use the middle slice to simulate the geometry of the ramp. It has approximately 150m of depth and 1,5 km of length. I set only six nodes with fix head BC and max flux = 0 restriction to represent the ramp excavation which takes 1 year then I set one time –varying function for each node. Until this stage is the same model that I did before. The difference is that I started the time-varying function every 60 days without set any value for first 59 days. (See below). Then (I think) FEFLOW used the first data (60 days) at first simulation days anyway.  If I set the ground elevation plus the seepage restriction (max flux =0) nothing happened with this node until day 60.1 when the elevation changes.  Well, now It’s working. I put this if someone has the same problem.


[b]Before[/b]
Time (day) F
60 361.67 (ramp elevation)
365 361.67



[b]NOW[/b]
Time (day) F
0 400 (ground elevation)
60 400
60.1 361.67 (ramp elevation)
365 361.67


Saludos
Claudia Martínez

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