• ### Re: river pollution

Thanks gdidio
Actually we figured that out, by applying a in/out mass transfer rate, in addition to the in/out flow transfer rate that goes with the 3rd kd bc. This is necessary, unless the C that you specified in the river bc is also the C in the groundwater, which is usually not the case by several orders of magnitude. Fortunately we knew which mass had to be loaded from the river to the aquifer, so we could calibrate the in/out mass transfer rates.
Cheers !
• ### ss flow and ts transport

Hi
When we simulate transient transport with a steady state flow, a warning message appears (the ss flow should be converged etc). This pertubes me a bit. Does feflow run the flow model just before starting the transport simulation, or will it just use the previously converged solution ?
• ### river pollution

Hello
I have a 3rd kd bc that simulates a river. Which transport bc should I use to simulate a transfer of pollution from the river concentration to the aquifer ? If I use the mass transfer cauchy bc, should the in and out transfer rate be similar to the in and out transfer rate in the flow material properties panel ?

Thanks
Didier
• ### Re: river fluctuation as a bc

Thanks Peter, I would love to try the module as I think it fulfils my need.
Cheers
Didier
• ### river fluctuation as a bc

I have a river with a natural slope. This is simulated as  a 3rd type bc in my s1 to s3. To simulate a river fluctuation, am I obliged to define for each node a specific time serie or is there an option to merge together the steady state river level with a relative fluctuation that would be constant for every nodes ?
• ### Re: Training

Any news regarding a course organized in France ?
Would you mind to add me to your mailing list. We may be a little group from my cy interested in this training.

Cheers
Didier
• ### Re: Open pit mine strategy: Seepage Nodes vs. Fluid-Transfer BC

My guess is that a seepage face is more slow to simulate because it is a constrained bc, while a fluid-transfer bc is a an unconstrained one. A constrain is an extra numerical load. However, are you able to achieve the same results with both approaches ?
• ### Re: Time serie (constant curve type) problem with 5.x

Thanks Peter,

Effectively, yes the T-list is the same as the dac signal.
• ### Re: Time serie (constant curve type) problem with 5.x

I am reopening this issue. I had a complete trust on this solution however we just checked our mass balance for each time steps, and we still have anoying linear interpolations. I attached a chart showing the difference between the assigned and simulated recharge time-series. The labels on the chart show which X -(time) values are used.

Any recommendations ?

Cheers,
Didier
• ### Re: heads above the water table in phreatic mode

Thanks Pete
So if the Top/bottom flow is applied to the top layer, even if this one is dried, does Feflow apply a delay function to transfer the flow from the ground to the water table surface ?