$\newcommand{\Dev}{\operatorname{Dev}}$ $\newcommand{\dev}{\operatorname{dev}}$ $\newcommand{\grad}{\operatorname{grad}}$ $\newcommand{\divg}{\operatorname{div}}$ $\newcommand{\Ei}{\operatorname{Ei}}$ $\newcommand{\tr}{\operatorname{tr}}$

Global constants currently include the universal gas constant $R$ [F$\cdot$ L/n$\cdot$ T], absolute temperature $\theta$ [T], and Faraday constant $F_{c}$ [Q/n]. These constants must be expressed in units consistent with the rest of the analysis:

<Globals>
  <Constants>
    <R>8.314e-6</R>
    <T>298</T>
    <Fc>96485e-9</Fc>
  </Constants>
</Globals>