Aerodynamic Characteristics of Ducted Propulsion Fan Using Secondary Air Intake

Today, the aviation industry is transitioning from fossil fuel to renewable energy. Re-newable energy systems have advantages, such as cleanliness and reduced emissions, but also face limitations in battery energy density and aerodynamic performance dur-ing operation. Therefore, electric ducted propulsion fans (eDPFs) are a promising so-lution that uses duct components to enhance aerodynamic efficiency and operational safety. This study utilizes average Navier-Stokes analysis, incorporating Reynolds numbers and a k-ω SST turbulence model, to examine eDPF configurations both with and without a secondary air intake channel, concentrating on internal flow dynamics and aerodynamic efficiency. The air intake channel, which is located close to the tip of the rotor blade, helps the eDPF move more mass and create more thrust. Several dif-ferent configurations of the secondary air intake channel were tested by varying the intake channel position, curvature, and size of the inlet and outlet ports under static conditions at 6000 rpm. The best design improved thrust by an additional 2.2% com-pared to the baseline case without the auxiliary intake port