Ground-water level changing

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eilif
Posts: 1
Joined: Mon May 11, 2020 6:28 am
Location: Indonesia

Ground-water level changing

Post by eilif » Mon May 11, 2020 7:05 am

Dear sir,

I simulated a 350 cm soil column with the lower boundary condition is "Seepage Face" with h=0 as the bottom of my column is groundwater.
However, I still not satisfied since the result did not represent the real condition. In real condition the groundwater level is changing due to precipitation and also lateral flow from the upstream.
My question is how to specify the Lower BC using Hydrus 1D, if we would to consider the groundwater level changing.
If Hydrus 1D can not to solve it, can Hydrus 2D do that?

Thank you very much in advance

Best,
Eilif

Jirka
Posts: 4922
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Ground-water level changing

Post by Jirka » Mon May 11, 2020 2:40 pm

HYDRUS-1D certainly cannot account for lateral flow since it is a one-dimensional model. To account for any two-dimensional processes and factors, you would need a 2D model.

Obviously, you can have changing position of the groundwater table in the 1D model as well. See the Test2 example. You would have to you a different bottom BC to allow that.
J.

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