Discussion Forum

Hello,

I am a real beginner in Comsol that tries to improve its skill :)
Here is my problem:

I am simulating a basic micropump. It is simply made by a plastic layer deposited over a microfluidics channel.

I have managed to induce a deformation, due to a time varying applied force, on the channel, by using Moving Mesh and plane stress equations.
My problems come when i add the Navier-stokes equation to the channel.
Indeed, i can only manage to get a uniform velocity, and thus also a uniform pressure in the channel. I set up my boundary conditions at the two outlets with normal stresses equal to zero, which is obviously an error :)
Indeed, i dream to get the output flows due to the deflection of the channel. I ve read the modeling guide, but it did not really helped me.
It would be really great if you can help me!!
Thanks in advance !!

Marc