Posted by Precise Simulation on
URL: http://forum.featool.com/Need-help-on-Modeling-Adsorption-tp1665p1771.html

You seem to want to add an ODE as a coupled boundary condition, this is not supported by the current built-in functionality. Possibly you could maybe to this as a custom/user-defined function where in the Matlab function you would manually solve the ODE for q

https://featool.com/doc/physics#phys_coef_user