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How to model the water capillary inside fiber and diffusion of water through fiber to air?
Posted 26 août 2013, 00:43 UTC−4 Computational Fluid Dynamics (CFD), Microfluidics, Chemical Reaction Engineering 0 Replies
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Assume we have a vertical fiber in micro size and very bottom of it is in a droplet. We expect that water is wicked inside and outside the fiber; and at the same time water diffuses from inside fiber to outside through fiber (as porous media).
During the modeling I faced two problems:
1) How I can model the capillary problem outside the vertical fiber?
2) I am not so sure about which physics I need to use for capillary, diffusion (permeability) of water through porous media (fiber wall) to air.
I would appreciate if you could help me through these problems.
Best regards
Reza
Hello Reza Safi
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