[typhoon1010]

Hi,

I am studying porous media flow. I need to obtain total energy result.

I am using surface integral. But when I change the porosity. then area did not

change. and result is include error.

I added picture. For instance area is same both

porosity 0.4 and 0.1. But it must change. Because area change.

Surface integral take integral over the area. But area did not change, when I change porosity.

Can you suggest me way.

If you help, I will be glad.

Best regards.