Learning Forum

[zdfrankman]

I am modeling a pair of channels separated by a porous interface. How do I set an interface to have a zero-slip condition? As seen in this image, there is zero-velocity at the porous jump, but for some reason the flow does not respond to this edge velocity and forms a discontinuity.
I would expect the velocity profile to look more like this:

What options can I use to achieve this flow profile?

[Karthik Remella]

Hello:
Is my understanding of your question accurate - you do want normal velocity across the interface but you want to impose a no-slip condition tangentially along the interface? Is this right? There seems to be a dip in the velocity when you use the porous jump condition. Is this what you want when you use the interface condition?
Karthik

[zdfrankman]

I would like to have zero velocity at all points of the interface. I would like for there to be a no-slip boundary on the interface.
In the future, I would like to have a Species mixture model with 1% oxygen and 99% liquid water in one channel and 0% oxygen and 100% liquid water in the other channel. I would then like to quantify the diffusion of oxygen across the interface.
Before I can do that, I need to have the correct flow parameters within each channel.