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preventing of writing of excess folders

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Old   July 29, 2013, 09:40
Default preventing of writing of excess folders
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Ehsan
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in time folders some as look excess folders like ddt0(rho),k_0,ddt0(rho,U),...
most of them with a 0 suffix are written in time folders.
what do they for solver and how can prevent writing them in time folders due to no need to them in post processing.
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Old   July 29, 2013, 09:45
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As far as I know, they are needed for restarting, depending on your time-integration scheme, as it stores the previous time step.
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Old   July 29, 2013, 10:21
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thanks,then its because of crankNicolson I have chosen as time scheme.
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Old   July 29, 2013, 10:56
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Hi Ehsan,

That is exactly the reason. If you would take Euler you won't get those files. If you think about it, it makes perfectly sense that 2 previous time steps to restart a second order time integration scheme.

If you would write the output after every iteration, you will see that the "U_0" is exactly the same as the "U" file of the previous time step.

Cheers,

Lieven
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