Netgen visualisation problem with time dependent Dirichlet data

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1

Hi,

currently I am running the Schäfter-Turek benchmark problem 2D-3. This is the similar to the problem considered in the i-Tutorial on Navier-Stokes but with a time-dependent inflow Dirichlet boundary condition.

My problem: When I run the script with the Netgen GUI, there is a redraw of the velocity solution when I set the Dirichlet data in every time step, even though the only “Redraw()” command is set after I have computed the new solution. This makes looking at the solution during simulation almost impossible. Is there a way os suppressing this redraw? I would like to avoid having to make a VTK output every time I run the script to look at the results once the simulation has finished.

Thanks,
Henry

2

It might be that the Redrawing is not yet finished when you already update the boundary conditions in the next time step. You should try using Redraw(blocking=True) which waits until the drawing is finished before progressing in the script.

Best,
Christoph

3

Thats done the trick! Thank you very much!

Best Wishes,
Henry