\begin{table}%t3 
\caption{Some properties of the 2D simulations: number of grid points in radial~($N_{\rm r}$) and angular~($N_{\theta}$) direction, radial ($\Delta r$ in $10^{6}$~cm) and angular grid resolution~($\Delta \theta$), characteristic length scale~$l_{\rm c}$ of the flow (in $10^{8}$~cm), characteristic rms~velocity~$v_{\rm c}$ of the flow (in $10^{6}\cms$) averaged over the width of 
the convection zone $R$~$\sim$ $l_{\rm c}$, Reynolds number~$R_{\rm n}$ associated with the numerical viscosity of our code \citep{PorterWoodward1994}, damping timescale due to the
numerical viscosity~$t_{\rm n}$, typical convective turnover time $t_{\rm o} = 2~R/v_{\rm c}$,
and maximum evolution time~$t_{\rm max}$ (in~s), respectively.}\label{simu2d}
%\centering
\small
\begin{tabular}{llllllllll} 
\hline
\hline
Run & Grid & $\Delta r$ & $\Delta\theta$ & $l_{\rm c}$ & $v_{\rm c}$ 
& $R_{\rm n}$ & $t_{\rm n}$& $t_{\rm o}$ & $t_{\rm max}$ 
\\
\hline 
hefl.2d.1 & 180 $\times$ 90 & 5.55 & $2\degr$ & 4.7 & 1.29  & 1900 & 11~000 & 730 & 30~000  \\ 
hefl.2d.2 & 270 $\times$ 180 & 3.70 & $1\degr$ & 4.7 & 1.79  & 8900 & 36~000 & 525 & 30~000 \\
hefl.2d.3 & 360 $\times$ 240 & 2.77 & $0.75\degr$ & 4.7 & 1.84 & 21~000 & 83~000 & 510 & 30~000 \\ 
\hline
\end{tabular} 
\end{table}