This research delves into the complex realm of fluid-structure interactions (FSI) in the context of full-span conductors exposed to varying wind conditions along their length [1]. Within the context of extended cable spans, our study investigates the phenomenon of multi-mode behavior, wherein adjacent vibrational modes progressively converge as the mode numbers increase. This is in order to push our undersatanding towards more reaslistic wind conditions [2]. Specifically, we analyze the interplay of these modes through the relationship fm2/fm1 = m2/m1 , (1) with a particular emphasis on cases where m2 equals m1+ 1, resulting in fm2/fm1 = (m1+ 1)/m1. To tackle this intricate challenge, our approach involves extended conductor spans equipped with numerous Computational Fluid Dynamics (CFD) strips. Our research underscores the imperative of optimizing efficiency through parallel processing techniques. In pursuit of this goal, we leverage the newly developed ”Flexinflow” package, tailored for strip theory simulations, effectively incorporating a moving reference frame to simplify the representation of the FSI. Our objective is to comprehensively grasp how these velocity variations influence the conductor’s multi-mode behavior. To generate our database and validate our findings, we employ a combination of Reynolds-Averaged Navier-Stokes (RANS) and Large-Eddy Simulation (LES) techniques, merging theoretical analyses with computational simulations. This research not only contributes significant insights into the behavior of full-span conductors under varying wind conditions but also paves the way for further exploration in the intriguing field of fluid-structure interactions.