The effect of blade sweep has been studied numerically with the Lattice Boltzmann Method on a family low-speed free-vortex axial fans sweeps ±45°. Good overall aerodynamic agreement is first demonstrated all at design condition, particularly in tip gap. local larger wall-pressure fluctuations seen unswept and backward swept compared to forward case are traced stronger vortices that remain rotat...

This paper presents an overview of the characteristics potentially influencing profile vortex shedding (PVS) phenomenon being relevant in noise and vibration low-speed axial fan rotor blades. Dimensional analysis has been applied to explore essential dimensionless quantities a systematic comprehensive manner. On this basis, limitations have established, simplifying assumptions set up terms PVS ...