Recently, I use HYDRUS-1D with a saturated initial condition. I specified that the pressure head at each node is zero and the model connot converge. However, when I specified h = 0.001 cm or even small, the model can converge and the results seem like normal. Can I use the small pressure head in my model as initial condition, will it lead to mistakes? Could you give me some advice what could cause this small difference?
Thank you very much!
Sincerely yours, Xing.
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