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Moving liquid slug through pipe system

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Old   August 20, 2021, 05:41
Default Moving liquid slug through pipe system
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Hi All,

I would like to know what is the best way to model a liquid slug being pushed with a moving wall through a series of straight and bend piping. The wall is flushed with the pipe so there is no leakage.
I have used Fluent remeshing to move it in the vertical part of the pipe but not sure about the bends. Can we move the wall through bends using udf or is it easier to use overset mesh?

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