Timestep and VTK write-out

[jagan1mohan]

Hi @cgw, I’ve worded this question incorrectly in my previous post. Could you please reply:

In setup, if dt_max = 1e-1, dt_min = 1e-6 and vtk write-out time interval is 0.001, is it that simulation time-step will never go above 0.001, say to 0.005 or 0.010, to honor this write-out request, even though solver becomes stable at these higher time-steps?

[cgw]

No that is not the case, and you can check this for yourself.

Here, dt_min is 1e-6, dt_max is 1e-2, and vtk_dt is 1e-5

“dt” is plotted during the run. It clearly goes above 1e-5.

[jagan1mohan]

Thank you for your quick response,