Poiseuille 2D (Erroneous results for lx and ly smaller than 1)

[achodankar]

Hello Developers,
I get an error “Warning: empty cb range [0:0], adjusting to [-1:1]”, when lx and ly values are smaller than 1. How should I fix this issue? I am unable to get results for values smaller than 1.

Thank you.

Yours sincerely,

Abhijeet

[Adrian]

This is an artifact from gnuplot output and doesn’t impact the actual simulation results.

What do you mean by “get results for values smaller than 1”?

[achodankar]

Hello Adrian,
I change the geometric domain values, i.e lx and ly are set to values smaller than 1. For example: lx=0.2 and ly=0.1. The output vtk files don’t show up for this case.

Thank you.

Yours sincerely,

Abhijeet

[Adrian]

Reducing only the channel size without also changing the physical discretization resp. N accordingly results in a very small lattice. This simulation converges after only a small number of steps – before any VTK output were written.

[achodankar]

Hello Adrian,
Thank you. This issue is resolved now.

Thank you.

Yours sincerely,

Abhijeet C.

[Author]

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