Restart at Point of Failure with New Time Parameters?

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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swhitman
Posts: 9
Joined: Fri Apr 15, 2016 8:36 pm
Location: USA

Restart at Point of Failure with New Time Parameters?

Post by swhitman » Sat May 07, 2016 4:42 am

I am wondering if it is possible to restart a hydrus simulation at the point of failed convergence with a new (smaller minimum) timestep rather than having to begin my simulation from the start? I am running multi-year simulations over a large physical domain and this would save me some serious time with setting appropriate physical and temporal discretization.

Thanks,

Spencer

Jirka
Posts: 4733
Joined: Sat Mar 16, 2002 3:47 pm
Location: USA
Location: Riverside, CA

Re: Restart at Point of Failure with New Time Parameters?

Post by Jirka » Sat May 07, 2016 5:20 am

You can restart simulations, after adjusting the boundary conditions and print times, from the latest print times, for which pressure head (and concentration and temperature) profiles are saved. You need to import these profiles as an initial condition (using command Edit->Initial Condition->Import. J.

EladD
Posts: 30
Joined: Wed Sep 30, 2015 5:04 am
Location: Israel

Re: Restart at Point of Failure with New Time Parameters?

Post by EladD » Sun May 08, 2016 9:57 pm

Hi,
Assuming that you know at what time the simulation fails, you can run it to smaller time (final time = fail time-delta t).
Then you can upload the final simulated conditions as initial condition for you debugging simulation (as Jirka mentioned).
Cheers,
ED
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