Author Topic: VOF: How do I plot the interface between two phases?  (Read 1430 times)

Offline infocfd

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VOF: How do I plot the interface between two phases?
« on: May 13, 2012, 10:55:02 AM »
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How do I plot the interface between two phases? I am doing VOF simulation.

Offline william

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Re: VOF: How do I plot the interface between two phases?
« Reply #1 on: May 13, 2012, 10:55:36 AM »
In FLUENT, you can contours

In CFD-POST:

Assuming that the VOF problem involves water and air, you first create a surface at the interface using Insert->Location->Isosurface. The variable would be Water.Volume Fraction and the value is 0.5.

The isosurface can be seen in the viewer. The function calculator may be used for evaluating quantities on this surface.

A curve may be created based on the intersection on the isosurface and a boundary. Use Insert->Location->Polyline. For Method, select Boundary Intersection. Select the desired boundary surface and the isosurface. The polyline can now be used as a locater in an expression, or can be used for charting, or can be exported via a .csv file.