Discussion Forum

Hello everyone!

I am brand new to ComSol. For our bioengineering project, we are trying to see if particles will diffuse radially into a hollow cylindrical structure.

I am having difficulty understanding how to:
-create pores or holes on the cylinder. I want to be able to easily change the number of pores (and the size of the pores) on the structure.
-run a study that displays the concentration gradient of particles over time. (or somehow measure how many particles diffuse to the inside/center of the cylinder.

Note:
-I completed the busbar tutorial and the "creating geometries" tutorial, so that is the extent of my experience.
I was able to create a hollow cylinder of defined thickness.

Ideally:
I want to create 6 concentric cylinders. Each has the same pore density and pore size. We are trying to test this setup using a variety of pore densities, and measure when a significant amount of diffusion occurs in the innermost layer at a fixed time, t.

I have access to ComSol 4.2 (not 4.2a yet, but I believe we can run diffusion studies even without the particle tracing model).

I hope what I am asking is making sense. Any guidance would be greatly appreciated. I dont know what study to use, and what parameters I would need to set in the study.

Thank you so much, and let me know if you need more information!

-Arjun