I am trying to use HYDRUS to simulate transport in soil columns that start in fully saturated condition and simultaneous with opening the bottom valve, a high level of suction is applied (300 cm to 800 cm). Now, I would have liked to ask you 2 questions. My simulations does not even pass the first iteration.
So I wanted to check if my assumptions on the initial condition is correct? I have assumed that initial condition will be computed from hydrostatic pressure (so in a saturated soil column with 60cm length, it starts at 0 at the top and +60 at the bottom where suction will be applied); or simply 0 pressure everywhere in the domain will be enough for HYDRUS to simulate initial fully saturated condition?
Then, I am thinking how can I apply such a suction(300 cm to 800 cm) at the bottom so the discontinuity between +60cm and 300cm at the bottom (caused by initial condition and boundary conditions) does not result in a model that is not converging.
Thanks a lot for your information.
initial condition in saturated soil column with high suction at the bottom
Re: initial condition in saturated soil column with high suction at the bottom
You should keep at least one node at the top unsaturated. J.
Re: initial condition in saturated soil column with high suction at the bottom
I think that I didn't explain myself well. If I have a 60 cm soil column that is initially fully saturated (with ponding water of 2 cm accumulated at the top), and it is exposed to a suction of 800 cm at the bottom. What should I change in the attach project (example.zip
Thanks a lot for your time and response.
) so I do not face "numerical model did not converge error"Thanks a lot for your time and response.
Re: initial condition in saturated soil column with high suction at the bottom
Here it is. J.
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 1INFILTR.rar
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