Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Capillary pressure
Posted 13.04.2020, 07:22 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Microfluidics Version 5.3a 0 Replies
Please login with a confirmed email address before reporting spam
Hello!
I'm trying to simulate sessile droplet deformation with taking into account capillary pressure. To calculate capillary pressure I use Weak Form Boundary PDE which defines the curvature radius of droplet surface. Boundary PDE contains normal vectors nr and nz (cylindrical system). In this way I can estimate capillary pressure on the surface, but can't to take it into account since, obviously, nr and nz can't be defined in the volume.
The question is: How to take into account the capillary pressure inside the drop volume?
P.s. I can't just add Boundary Force for selected surface, since I use "Two Phase Fluid Flow, Moving Mash" module for both drop volume and surrounding air. Maybe I can apply Divergence Theorem somehow?..
Hello олег чирс
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.