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Wetted Wall BC

Posted Mar 5, 2012, 3:36 p.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD) Version 4.2, Version 4.3a 2 Replies

Osameh Ghazian
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Hi,
What are the equations for wetted wall boundary condition in COMSOL ? I can not find it. I want to know what exactly happens when you set the contact angle. Is COMSOL using the Navier Slip Length ? Is this a local or apparent contact angle ?
2 Replies Last Post May 18, 2014, 5:46 p.m. EDT
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Hello Osameh Ghazian

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Monika Dash
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Posted: 1 decade ago Jan 27, 2014, 5:37 a.m. EST
I have the same query. Someone please clarify.
I have the same query. Someone please clarify.
Roya Samanipour
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Posted: 1 decade ago May 18, 2014, 5:46 p.m. EDT
Hi,

I am trying to simulate droplet break up in microfluidic channel( water in oil), Two phase flow-level set. For wetted wall boundary condition I put pi/4 for 3D model, However for the 1D simulation it doesn't work. in this case if I put 3*pi/4, I get the result for making droplet. What is the correct contact angle for making droplet of water in oil in microfluidic channel?

Thanks
Hi, I am trying to simulate droplet break up in microfluidic channel( water in oil), Two phase flow-level set. For wetted wall boundary condition I put pi/4 for 3D model, However for the 1D simulation it doesn't work. in this case if I put 3*pi/4, I get the result for making droplet. What is the correct contact angle for making droplet of water in oil in microfluidic channel? Thanks

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