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Old   March 4, 2016, 13:24
Question Export transient results from solver
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I am doing large transient simulations (10k + timesteps) and was wondering if it was possible to get the solver to calculate some values and export them for every timestep?

I am doing multiphase simulations and want the solver to export the volume fraction of one of the phases in the default domain for each timestep.

I want to use the data to plot volume fraction against time, I am now doing this in CFX-post but it takes forever to calculate (1 hour ++++). If it was possible to get the solver to just write the values to a csv file or something that would be great.

Also, is it possible to set stop criteria for the simulations? So that the solver runs until the volume fraction of a phase is less than a given value?

Thanks for the help
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Old   March 5, 2016, 05:05
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Glenn Horrocks
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This is very easy - just use a monitor point defined with a CEL expression. volumeInt(Phase1.vf)@domain or something like that.

Stop criteria - have a look at termination criteria in the CFX documentation.
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solver control, solver output, transient, volume fraction

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