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How can I get the field-value at previous two time-steps

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Old   April 1, 2015, 19:13
Default How can I get the field-value at previous two time-steps
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Hi, formers!

I want to predict the value of a scalar-field at the runTime using its at the previous two time-steps. In a mathematical expression, it can be expressed like F(n+1)=2*F(n)-F(n-1).
In openFOAM, I know that creatField can read and write the values in the running. So, the previous two time-steps maybe can read by IOobject from time-named folder. But, I don't want to write the field at all steps.
Are there some skills to realize this but no writing in every step?

Thanks for your attention!

Best wishes for you!
duanjianxian is offline   Reply With Quote


ioobject, openfoam, read fields, solver

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