wpdengzheng

@stoiver Thank you for your reply. I have a detailed description of the porous equation here, and upload these two references. [Referance [1] Isotropic porosity.pdf](https://github.com/GeoscienceAustralia/anuga_core/files/1575014/Referance.1.Isotropic.porosity.pdf) [Referance [2] Anisotropic porosity.pdf](https://github.com/GeoscienceAustralia/anuga_core/files/1575017/Referance.2.Anisotropic.porosity.pdf) The...