<p>The present research analysis shows the results of the numerical investigation focusing on vortex shedding around a pair of triangular and elliptical cylinders providing a comparative analysis of their aerodynamic behaviour. Unlike previous studies that primarily focused on isolated cylinders or limited configurations, this work systematically examines drag, lift and vortex dynamics over time for multiple configurations. By comparing the drag coefficients for upstream triangular and elliptical cylinders we observe that with the rise in Reynolds (<i>Re</i>) number the <i>C</i>_D1 for the triangular cylinder increases while for elliptical cylinder it decreases. As for the downstream cylinder the <i>C</i>_D2 for both the geometrical shaped cylinders decreases with the increase in <i>Re</i> number. Another observation that has been established is that with the rise in <i>Re</i> number the lift coefficient (<i>C</i>_L) for the cylinders <i>C</i>1 and <i>C</i>2 for both triangular and elliptical cylinders increase. Results indicate that triangular cylinders generate higher pressure variations and stronger vortex shedding, leading to increased lift and drag coefficients compared to elliptical cylinders. The analysis also shows that the Strouhal number, which is a representation of the frequency of vortex shedding, increases with <i>Re</i> number for both upstream and downstream cylinders, regardless of their shape. Furthermore, the effect of spacing between the cylinders reveals distinct trends in aerodynamic forces, with increasing distance reducing drag on the upstream cylinder while altering lift dynamics for both shapes. These findings offer valuable insights into optimizing cylinder geometries in engineering applications such as aerodynamics, structural stability and heat transfer.</p>