## 5 Conclusions
\begin{table}
\begin{tabular}{c c c c c c} \hline \(Re=1000\) & \(\lambda\) & \(1/17\) & \(1/9\) & \(1/5\) & \(1/3\) \\  & Position & X = 0.5118 & X = 0.5301 & X = 0.5382 & X = 0.5822 \\  & & Y = 0.4425 & Y = 0.2764 & Y = 0.2195 & Y = 0.1830 \\  & \(\varphi\) & \(-0.0078\) & \(-0.0176\) & \(-0.0334\) & \(-0.0426\) \\  & \(\zeta\) & \(-23.27\) & \(-3.566\) & \(-4.269\) & \(-5.794\) \\ \hline \(Re=7000\) & Position & X = 0.4828 & X = 0.5349 & X = 0.5311 & X = 0.5927 \\  & & Y = 0.2188 & Y = 0.2047 & Y = 0.2031 & Y = 0.1744 \\  & \(\varphi\) & 0.0128 & \(-0.0126\) & \(-0.0309\) & \(-0.0406\) \\  & \(\zeta\) & 1.443 & \(-1.637\) & \(-3.304\) & \(-5.916\) \\ \hline \end{tabular}
\end{table} 
Table 4: Vortex properties of the primary vortex of different geometries at steady Reynolds numbers 1000 and 7000. **Author Contributions:** Conceptualization, all; methodology, all; software, B.A. ; validation, B.A. and S.G.; formal analysis, B.A. and S.G.; investigation, all; data curation, B.A. and S.G.; writing--original draft preparation, B.A. and J.M.B. ; writing--review and editing, J.M.B. and B.A. ; visualization, B.A. and S.G.; supervision, J.M.B. and B.A. ; project administration, J.M.B. and B.A. All authors have read and agreed to the published version of the manuscript  
**Funding:** This work was sponsored by the foundation of National Key Laboratory of Science and Technology on Aerodynamic Design and Research (No. 614220121030101) and Key Laboratory of Icing and Anti/De-icing of CARDC (Grant No. IADL20210302). **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Conflicts of Interest:** The authors declare no conflict of interest. **Nomenclature**  
\(C_{s}\) & Lattice sound speed  
\(C\) & Lattice velocity  
\(\mathbf{e}_{i}\) & Unit velocities vector along discrete directions  
\(f_{i}(\mathbf{s},t)\) & Precollision distribution functions  
\(f_{i}(\mathbf{s}+\mathbf{e}_{i}\Delta t,t+\Delta t)\) & Postcollision distribution functions  
\(f_{i}^{eq}\) & The discrete equilibrium distribution functions  
\(f_{i}^{neq}\) & The discrete nonequilibrium distribution functions  
\(L\) & Characteristic length  
\(\mathbf{n}\) & Normal vector perpendicular to the walls  
\(Re\) & Reynolds number  
\(SD_{\gamma}\) & Standard deviation of perturbation decay rate  
\(\mathbf{s}\) & Spatial position vector  
\(t\) & Iteration steps  
\(t^{\prime}\) & Physical computational time  
\(\lambda\) & Aspect ratio of the top line over the base line  
\(\mathbf{u}\) & Velocity  
\(U_{lid}\) & Lid-driven velocity  
\(\Omega\) & Converged solution  
\(u_{x}\) & Horizontal component of velocity  
\(u_{y}\) & Vertical component of velocity  
\(u_{x}^{\prime}\) & Unitized horizontal component of velocity  
\(u_{y}^{\prime}\) & Unitized vertical component of velocity  
\(i\) & Discrete directions  
\(\Delta x\) & Grid spacing  
\(\Delta t\) & Time step  
\(\gamma\) & Perturbation decay rate  
\(\epsilon\) & Perturbation  
\(\rho\) & Density  
\(\varphi\) & Stream function  
\(\zeta\) & Vorticity  
\(\xi\) & Velocity vector  
\(\tau\) & Single relaxation time term  
\(\omega_{i}\) & Weight coefficient  
\(\Omega_{f}^{i}\) & Discrete collision operator