[gsabhishek]

Hi All,

I have a complex rigid solid structure in a channel with low Re(<10) incompressible flow. I intend to find out the the pressure drop across the solid. The domain is shown below :


here



This being a low Re flow we can apply a darcy type flow relation to evaluate the pressure drop. But unfortunately, the solid body is complex and evolving... so estimating its porosity/permeability is quite difficult.

I intend to use the N-S equation as follows :

here the last term makes the flow zero on the surface and inside the solid. The domain is initialized such that =0 for liquid and =1 for solid.

Solid Structure and fluid flow are not coupled. The sequence is as follows
1) The solid structure evolves (very slow)
2) I solve the navier stokes everywhere in the domain untill steady state
3) Next evolution step for solid and repeat with step 2

Could you please help me with understanding the following :
> Is the current form of the equation capturing the physics of the problem. If not how should I approach it
> I might have capillary effects in some regions. How do I handle them
> I intend to use OpenFoam for solving this. What would be a good validation case

thanks for your time.

[Utkan]

How did you solve your problem?

[aerosayan]

Originally Posted by gsabhishek

The domain is shown below :

here

I don't know the solution to your problem. I wanted to let you know that your link is broken and the dropbox file seems to be deleted.