hollow fiber membrane CFD
 

Hi all, I am trying to model a hollow fiber membrane as a pressure jump surface
here is my BCs:

=======pressure outlet===================

========porous jump====================
pressure inlet (water) pressure outlet
========porous jump====================

=======pressure oulet====================

I set the porous jump permeability as 1.7E-16 m^2 and thickness of 0.278mm .
The inlet pressure is 8.4 psi and outlet pressure is 3.8 psi.
The pressure at the side wall is 0 psi

But the case is always not converge,:confused: can anybody help?

Thanks