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Identifying the underlying mechanisms behind the excitation of transverseoscillations in coronal loops is essential for their role as diagnostic toolsin coronal seismology and their potential use as wave heating mechanisms of thesolar corona. In this paper, we explore the concept of these transverseoscillations being excited through a self-sustaining process, caused byAlfv\'{e}nic vortex shedding from strong background flows interacting withcoronal loops. We show for the first time in 3D simulations that vortexshedding can generate transverse oscillations in coronal loops, in thedirection perpendicular to the flow due to periodic "pushing" by the vortices.By plotting the power spectral density we identify the excited frequencies ofthese oscillations. We see that these frequencies are dependent both on thespeed of the flow, as well as the characteristics of the oscillating loop.This, in addition to the fact that the background flow is constant and notperiodic, makes us treat this as a self-oscillating process. Finally, theamplitudes of the excited oscillations are near constant in amplitude, and arecomparable with the observations of decay-less oscillations. This makes themechanism under consideration a possible interpretation of these undamped wavesin coronal loops.

Transverse loop oscillations via vortex shedding: a self oscillating process