Crank Model
We propose to download the software of the article "For a numerical evaluation of the Crank model" of L. Largitte and R. Pasquier. It allows to fit precisely the Crank Model :
\[\begin{aligned} \frac{Q}{Q_{max}} = 1 - \frac{6}{\pi^2} \sum_{n=1}^{\infty} \frac{1}{n^2}\exp \left( -\frac{D_S n^2 \pi^2 t}{R^2} \right) \end{aligned}\]
There are an interface for MATLAB and Python.