Temperature dependent model for molecular diffusion in the pore water
This model takes the form of
\mathbf{D} = \mathbf{D}_0 \mathrm{exp} \left( \frac{E_{\mathrm{a}}}{R} \left( \frac{1}{T_0} - \frac{1}{T} \right) \right),
where \mathbf{D_0} is the molecular diffusion at the reference temperature, E_{\mathrm{a}} is the activition energy for diffusion, R is the ideal gas constant, T is the absolute temperature, T_0 is the reference temperature.
No additional info.
Used in no end-to-end test cases.