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Hydrostatic pressure build up at interfaces

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Old   November 23, 2013, 17:15
Default Hydrostatic pressure build up at interfaces
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Aileen Magee
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Hello there,
I have a model with 3 layers. I have specified a pressure of 0Pa at the surface of the top layer and 80Pa at the bottom of the lowest layer. I have set the operating density to the lowest domain density and enabled gravity, this works for a single domain without interfaces. However when I include interfaces, there seems to be a build up of pressure around the interfaces, could anybody tell me why this happens?
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