\begin{figure}
 % \textcolor{magenta}{*** Figure 13 ***}
 % \textcolor{magenta}{*** Figure 4a of the CFD4NRS-7 paper ***}
    \begin{center}
      \includegraphics[width=0.95\textwidth]{figures/figure11/coupled_timehistories_v2k_avtfkeff.pdf} 
  \end{center}
  \caption[Traces of the $k_{eff}$ (-) and mean temperatures (\si{\kelvin}) obtained by \CSAT~and DYN3D-MG obtained from the coupled simulations of the flow through a cylindrical core with a total power of \SI{3000}{\mega\watt}.]{}\label{fig:11} % first figure in \S\,\ref{casestud:06}
\end{figure}
