Discussion Forum

Hey There,

I am new in simulating, but I tried alot in the last weeks.
I want to simulate the fluid flow through deforming porous Material under deformation.
I started to look at the examples and i simulated the single models for NS-flow through an S-bar or bended an iron bar.
The single handling with the models is working.
Now i try to start over with a simple model of coupling both models into an fluid flow with mechanical loading in 2D.

The three models i need for that are (as far as i understood...):

- plain strain
- moving mesh
- navier stokes

but if i try to solve the model, i never get an errorfree solving, what ever i try and change.
The only example that i have access to with the same models is the perestaltic pump, and if i reset the model and re-solve it, its not working at all with my comsol.
i don`t know what i can do else... I read the manuals but I don`t get any information that it useful enough to solve my problems with my model.
Maybe its only a total easy mistake i made...
i`ll hang on the modelfile, maybe someone can look over it.
Its just a fixed bar at bottom, a on the left and right side fixed bar at top and inbetween an fluid, that should flow from left to right through the space in between. And after deforming the bar on top the flow of the fluid should change.

It would also be good to know: what kind of Modelpackage do I need to simulate something like this???
Is it required to have MEMS, or should it also work without?

i hope some one can help.
thanks,


Alex