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Using Boundary Integration in an Expression
Posted Aug 17, 2009, 1:38 p.m. EDT 1 Reply
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Hi,
I would like to know if it is possible to perform a boundary integration per simulation tick and use that information as part of an expression whose result would affect another boundary condition before the next simulation tick.
For example, I have a volumetric flow leaving a boundary, performing a boundary integration yields the volumetric flow. I would like to use that flow value in an expression to change the back-pressure of that boundary, per simulation tick.
I have only been able to perform a boundary integration in post processing. The alternative is to perform this task using the MATLAB interface, but I thought I would explore the possibility of a neater solution.
Many Thanks,
Regards,
Tom
I would like to know if it is possible to perform a boundary integration per simulation tick and use that information as part of an expression whose result would affect another boundary condition before the next simulation tick.
For example, I have a volumetric flow leaving a boundary, performing a boundary integration yields the volumetric flow. I would like to use that flow value in an expression to change the back-pressure of that boundary, per simulation tick.
I have only been able to perform a boundary integration in post processing. The alternative is to perform this task using the MATLAB interface, but I thought I would explore the possibility of a neater solution.
Many Thanks,
Regards,
Tom
1 Reply Last Post Aug 17, 2009, 3:55 p.m. EDT
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Posted:
2 decades ago
you can define an integration coupling variable which will integrate the flow velocity over the boundary at each time step.