[Libmesh-users] Request for help on the unsteady part of RB-FEM examples

[<oph...@qq...>]

These days I am trying to make an adjustment of the ex3 in reduced_basis category, that is to replace the constant source term whose value is 1 with a time-dependent term, e.g 2t. 


(my idea is to simply modify the loop of unsteady mode which I think already exists, because the program has successfully solved an unsteady example like ex3, where the equation has the term du/dt.)



However I haven't find out where to make my idea happen, as I don't know which part of the program recalculate the du/dt term at every time step.


I wonder whether I can acheive my goal by simply adding the time-dependent source term in the loop or not.


Thanks for all kinds of help.