\nomenclature[lIcal]{$\mathcal{I}$}{interface between $\Omega^\pmdom$ and $\Omega^\ffdom$}%
\nomenclature[tpm]{\textit{pm}}{porous medium}%
\nomenclature[ttr]{T}{transpose}%
\nomenclature[tff]{\textit{ff}}{free flow}%
\nomenclature[lxi]{$x_i$}{$i$-th spatial coordinate of point $\boldsymbol{x}$$[\text{m}]$}%
\nomenclature[ltini]{$t_{\text{ini}}$, $t_{\text{fin}}$}{initial and final time, respectively $[\text{s}]$}%
\nomenclature[zfij]{$\left[\vec{v}\right]_i, \left[\vec{M}\right]_{i,j}$}{components $i$ and $i,j$ of vector $\vec{v}$ and matrix $\vec{M}$, respectively}%
% \nomenclature[gZfftilde]{$\tilde{\Omega}^\ffdom$}{extension of $\Omega^\ffdom$ by auxiliary rectangles}%
\nomenclature[ts]{$s$}{$s$-node}%
\nomenclature[t1]{1}{1-node}%
\nomenclature[t2]{2}{2-node}%
\nomenclature[lXa]{$\mathcal{X}^\alpha$}{set of all $\alpha$ nodes in $\overline{\Omega}^\ffdom$, where $\alpha\in\left\lbrace1, \,2, \, s \right\rbrace$}%
\nomenclature[lNa]{$N^\alpha$}{number of all $\alpha$ nodes in $\overline{\Omega}^\ffdom$, where $\alpha\in\left\lbrace1, \,2, \, s \right\rbrace$}%
% numerical results
\nomenclature[Nfem]{\textit{FEM}}{finite element method}%
\nomenclature[Ncvfem]{\textit{CV-FEM}}{control volume based finite element method}%