Rainfall infiltration in the hillslope

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Zhaoyang Luo
Posts: 2
Joined: Wed Sep 06, 2017 1:11 pm
Location: China

Rainfall infiltration in the hillslope

Post by Zhaoyang Luo » Wed Sep 06, 2017 1:25 pm

Recently, I'm studying the rainfall infiltration in the hillslope using HYDRUS-2D and meeting some question. In the same condition, the simulation results are perfect when the soil type is loam, but in the sand results are not good. (eg., the pressure head and water content distribution along the vertical direction have sawtooth when the soil type is sand). Can anyone provide some help for me?
Attachments
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Simulation results for the sand (water content distribution along the vertical direction have sawtooth).
F~YULEX9R98$}J@ZJGPF%RN.png (73.71 KiB) Viewed 1568 times
HI59FO8{P70}{X0A]R@`~ND.png
Simulation results for the loam
HI59FO8{P70}{X0A]R@`~ND.png (79.76 KiB) Viewed 1568 times

Jirka
Posts: 4762
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Rainfall infiltration in the hillslope

Post by Jirka » Thu Sep 07, 2017 4:04 pm

One usually needs finer spatial and temporal discretization when dealing with sand compared to loam. I have discussed this issue in this text:
http://www.pc-progress.com/Documents/No ... zation.pdf

J.

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