adi

Hi all,

In 3D groundwater flow model by using Feflow 6.1, I want to ask about the sign for assigning groundwater recharge. Does it minus (-) or plus (+)?

Hai all,

I want to assign some pumping wells into several slices in my 3D model. I make 9 layers and 10 slices. Layer 1 is unconfined, layers 2-4 are aquitards, while from layer 5-9 are confined aquifer with clay inserted. 
I assigned wells BC into slices 6-10 in confined aquifer. Wells are located into slice 6 and 7, I already did and when simulated to check the effect of assigning this BC there was nothing happened which means the error was still lower than error accuracy, but the problems are when assigned wells BC into other slices (8 to 10) then simulated, the error always higher than error accuracy (1e-3) even though I put small value for pumping rate (0.5 m3/d).
Does anybody can help me to give some advices? Thank your for your attention

you have to visualize first the 3d body model, then you click again on 3D option then you can save in .shp for your 3D model or capture the body model. Try it.

Regards
Thomas

Thank you Pete for your reply,

but I still have a question regarding your answer, because when I calculated flux rate, I use equation Q=KiA, so I will get get flux rate in unit L3/T, then for assign flux boundary in Feflow, I just calculate hydraulic conductivity multiply hydraulic gradient (K.i), isn't it?

Thomas

Hai,

I am a new user of FEFLOW and now develop 3D groundwater flow model in 9 layers and 10 slices. For first two slices (Layer 1) are unconfined aquifer and slices 3 to 6 are aquitards while rest are confined aquifers. I have a problem when to assign flux boundary in the aquifers layers.

I have a question: How to calculate the flux boundary in FEFLOW? Because the unit for flux boundary (L/T) in FEFLOW is different from flux boundary unit in the other method (finite difference in MODFLOW), they have L3/T.  Firstly, I will run the model in steady state condition and after calibrated I will run the model in transient condition.

Thank you for your attention.

Regards
Thomas