This paper is a review of significant studies in the complex flow physics in diffusive, s-
shaped ducts, focusing on flow control methods employed to counteract the onset of …

Some types of aero-engine intake systems are susceptible to the generation of secondary
flows with high levels of total pressure fluctuations. The resulting peak distortion events may …

Currently the propulsion system and aircraft tend to be highly integrated, the ultra-compact
serpentine inlet and boundary layer ingesting inlet are the keys to realize the fusion. This …

The ability of vortex generators to reduce the unsteady distortion at the exit plane of an S
duct is investigated. The three components of the velocity at the aerodynamic interface plane …

Control of the boundary layer upstream and in the region of the engine inlet is an important
consideration for airplane designers. One important aspect of this problem can be seen in …

The complexity and twistiness of the ultra-compact S-shaped ducts with high curvature
aggravate the internal flow separation, which affects the intake efficiency. An advanced flow …

Total-pressure losses and distortion in an aggressive offset diffuser, induced by secondary-
flow vortices and boundary-layer separation, are mitigated using fluidic actuation for the …

Submerged inlets have been widely used in advanced aircraft due to their excellent stealth
characteristics, but they also suffer from poor aerodynamic performance. To improve the …

Flow separation and secondary flow in the S-duct of an aircraft engine cause severe
pressure loss and airflow distortion at the outlet, lowering engine performance. Herein, a …

Controlled concentrations of trapped vorticity within an offset, subsonic (M AIP≤ 0.7) diffuser
are explored for active suppression of flow distortion in joint experimental and numerical …