The paper presents a historical overview of the developments of aerodynamic design
methods for low-speed axial-flow fans. This historical overview starts from the first fan …

Rotor-only ducted axial fans with small hub-to-tip diameter ratio are widely used in many
branches of industry, especially for cooling and ventilation purposes. For such fans …

Ducted rotor-only low-pressure axial (LPA) fans play an integral role in automotive thermal
management of electric vehicles and are the primary source of noise from the underhood …

Many modern axial flow compressor and fan rotors feature forward swept blades. However,
there was no general consensus on advantages due to blade forward sweep until some …

The paper aims at discovering the relationship between the spanwise gradient of blade
circulation and the total efficiency gain due to forward sweep, in the case of low-speed axial …

This paper presents a simple but complete design method to obtain arbitrary vortex design
tube-axial fans starting from fixed size and rotational speed. The method couples the …

Common blade design techniques are based on the assumption of the airflow laying on
cylindrical surfaces. This behaviour is proper only for free-vortex flow, whereas radial fluid …

Forward swept blades in low-speed axial fan rotors allow for appreciable gain in the stall
margin and a small percentage gain in the maximum fan efficiency if the rotor blade …

Tube-axial fans are widely used in industrial applications because of their compactness,
simplicity, and low cost. However, the achievable fan pressure rise is generally penalised by …

Both cascade and isolated airfoil methods are considered valid in axial fan blade design, for
high (σ≳ 1) and low (σ≲ 0.7) solidities respectively. For bladings that feature intermediate …