The serpentine boundary layer ingesting (BLI) inlet can provide several benefits compared to conventional inlets, This inlet design was developed in response to environmental concerns such as reduction of noise and pollution in an effort to reduce overall weight and drag of air vehicles. The function of inlets is the supply of proper air flux at high quality to the engine. The term high-quality air flow refers to minimal loss of momentum and conservation of flow uniformity that are vital for engine operability and stability. Minimal loss of momentum directly affects fuel consumption, or range per given amount of fuel, However, the ingestion of a thick boundary layer coupled with the S-shaped offset of these inlets, result in a large flow distortion at the engine fan face which might lead to compressor's blades stall that can cause total failure of the engine. The current study displays control authority over flow non-uniformity using suction and blowing inside the inlet. Suction slots were implemented in various positions and combinations inside the inlet. This brought to maximum improvement of 3.7% in PR and 64.4% in DC60 of the inlet. However, the substantial enhancements come at a price of non-negligible mass flow that is sucked away from the inlet. This drawback was accessed by application of combined actuators, consisting of suction and blowing. Consequently, nearly similar level of improvement in performance was achieved, while the inlet mass flux was conserved.
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