need help

A discussion forum for users of the new HYDRUS 2D/3D. HYDRUS is a software package for simulating water, heat and solute movement in two- and three-dimensional variably saturated media. Happy Posting!
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Joined: Tue Mar 16, 2021 11:00 am
Location: Tunisia

need help

Post by balsam » Tue Mar 16, 2021 12:58 pm

Nouveau dossier (2).rar
dear all,
I don't know what is the problem
why software can't calculate the project
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Dear all,
I have been working with Hydrus 2D to simulate the wetting front behavior of subsurface drip in sandy soil. The drip (circle) has constant flux boundary of -0.2256945 cm/minutes (folder attached). The initial soil water content was assumed equal to the field capacity. Simulation period is for 75.6 minutes and the time criteria values are chosen as default values. But when I run the model it says "Numerical solution has been stopped since it has not converged in 10 consecutive time steps !"

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Location: USA
Location: Riverside, CA

Re: need help

Post by Jirka » Tue Mar 16, 2021 2:36 pm

Simply allow smaller time steps. I have changed the initial time step to 0.01 min and the minimum allowed time step to 0.001 min and the program ran just fine. J.
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