2016-09-16 9:22 GMT-04:00 Vaibhav Palkar <vaibhav_pal...@iitgn.ac.in>:
> The error being exactly zero is indeed intriguing. I'm still looking out for
> the reason why that is happening. I didn't understand what you meant by a
> "ramp in time". Could you please elaborate?
Since you are using a low order method in time, I am just wondering if
the solution is linear in time. This is one way to have the exact
solution at each time step and it could explain why the error is zero
(assuming that there is no spatial error)
> Step-52 works fine, I'm getting exactly the same results as the online
> documentation. I looked at time_stepping.templates.h, I think there is a bug
> around line 730, delta_t_guess should be assigned the value of new_delta_t
> (the coarsened time step) rather than delta_t (old time step).
Good catch!! Patch incoming.
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