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Interior wall - microfluidics problem

Suzan Materials science

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I have a system with three domains:

1) A nozzle made of quartz 2) The nozzle is filled with water 3) The nozzle is inside an air-chamber

I use laminar flow, and the level-set module where I only define the domains with the water and air. I want to track the water-air interface and see how the mensicus deforms.

However when I try to compute, it complains that there is an undefined variable in the domain that is the quartz nozzle. So I wonder:

  • how can it complain about a variable in an undefined domain?
  • I want the quartz domain to just be a solid wall separating the two fluids.

In laminar flow, I define it as interior walls. But I still get this error.

Any suggestions on how to move forwards?



0 Replies Last Post 3 juin 2020, 08:10 UTC−4
COMSOL Moderator

Hello Suzan

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