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triple contact line and angle contact

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Old   March 10, 2017, 04:18
Default triple contact line and angle contact
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I work on a two phase flow in a channel (2D axisymertrique), The gas is injected through a nozzle which has a thickness (internal Ryon = 0.1 mm and external Ryon = 0.2 mm), using interFoam
The triple contact line moves over time. It moves between the inner diameter and the outer diameter of the nozzle. I want to know if this is a miscalculation, or I have to fix the triple line or contact angle at the nozzle, and how do I do this?

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Old   March 14, 2017, 13:02
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Hi Lynda;

I have a few question.

1. What is "Ryon"? (I never worked on nozzle flows so, I am not sure if this word is specific to that field).

2. I am not clear about where the meniscus is in motion. Could you post a picture showing what is happening?

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Old   March 14, 2017, 15:05
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Uwe Pilz
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Dear Iynda,

I think it would be better to describe closer what you are trying to simulate. A sketch of the geometry would be fine, and a graph of the results in question too.
Uwe Pilz
Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)
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