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Old   October 30, 2013, 05:22
Default timescale factor switching
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Hello all.

I want to swith autotimescale factor automatically after certain number of iteration. Right now I have to switch it manually in CFX Solver Manager.

Is there any setting (expression) that can do it automatically?

Thank you for any reply.

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Old   October 30, 2013, 05:50
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No, but you can use edit run in progress to change it without requiring a restart.
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Old   October 30, 2013, 09:24
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That is what I want to avoid I thought there could be some expression like when Time Step = 15 then switch autotimescale to 10.
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Old   October 30, 2013, 17:27
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Have you tried setting the autotimescale factor to a CEL expression then using a CEL expression like if(aitern>15,10,1)?
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Old   October 31, 2013, 03:55
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Thank you for response. No I haven't, that is exactly what I wanted to know. Perfect! Thanks a lot Glenn.

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Old   August 5, 2015, 04:10
Default solid timescale factor switching
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Hello all,

does anyone know, if solid timescale factor can be switched automatically by using similar (or same) expression as fro fluid timescale factor?

Thank you for any help.

Best regards
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Old   August 5, 2015, 05:33
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I think so, but some parameters are not settable by expressions so I cannot be sure. So try it and find out.
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Old   August 6, 2015, 03:12
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So I've just copied and renamed the expression and this is error message that I got:

Parameter 'Solid Timescale Factor' in object '/FLOW:Flow Analysis 1/SOLVER CONTROL/CONVERGENCE CONTROL' is not allowed to be assigned an expression value that depends on variables. It must be assigned a numeric value, or an expression that resolves to a constant value.

Have you any idea how to modify it please?

Thank you
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Old   August 6, 2015, 03:16
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The message is very clear - you cannot vary it during a run.

To vary it you will need to stop, change the CCL and restart. You could also do a change run in progress.
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Old   August 6, 2015, 03:19
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Ok, I change material properties during the run by using command:

cfx5control -inject-commands CFX.ccl CFX_001.dir

This allows you to rewrite what you need without stopping the solver. But you have to set the working directory in pending tasks folder and have ccl inside.

Anyway thank you for help.

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