This paper presents an overview of the characteristics potentially influencing the
profile vortex shedding (PVS) phenomenon being relevant in noise and vibration of
low-speed axial fan rotor blades. Dimensional analysis has been applied to explore
the essential dimensionless quantities in a systematic and comprehensive manner. On
this basis, limitations have been established, and simplifying assumptions have been
set up in terms of PVS investigation. Groups of dimensionless characteristics playing
a role in the semi-empirical model for predicting the PVS frequency were identified.
The available semi-empirical model and its unique features related to the measurement
evaluation methodology and Reynolds number dependence have been outlined. The presented
comprehensive analysis provides guidelines from the perspective of transferability
of the literature data on PVS from steady, isolated blade profile models to low-speed
axial fan rotors. It also results in the formulation of objectives of future research
related to PVS.