Performance Enhancement of an External Compression Intake by the Boundary Layer Suction

Sepahi-Younsi, Javad; Esmaeili, Safa; Feshalami, Behzad Forouzi; Pellerito, Victoria; Hassanalian, Mostafa

doi:10.2514/6.2019-4320

Cited by 2 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is evident that a slot boundary layer bleed can significantly improve the intake performance and stability by preventing flow separation on the compression surface [58,91,108], especially when the shock train is close to the slot region [61,109]. Sethuraman et al [109] managed to reduce the shock oscillation by 50% with suction control, and reduced the oscillating frequency of the first shock by about 5 Hz, illustrating the effectiveness of the suction control when the shock train appears closer to the slot region [110].…”

Section: Boundary Layer Bleedmentioning

confidence: 99%

“…Distortion in the intake flow of supersonic intake systems typically exhibits a complex spatial nature, coupled with significant temporal variability. Currently, there is a scarcity of research focused on total pressure distortion within unsteady supersonic intakes [90,108,232], clearly indicating that the AIP experiences a substantial increase in flow distortion when buzz occurs. A more substantial knowledge gap is discerned concerning the dynamic distortion experienced by unsteady supersonic intake systems.…”

Section: Current and Future Perspectives In Engine-intake Aerodynamic...mentioning

confidence: 99%

See 1 more Smart Citation

Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration

Philippou,

Zachos,

MacManus

2024

Aerospace

View full text Add to dashboard Cite

High-speed air intakes often exhibit intricate flow patterns, with a specific type of flow instability known as `buzz’, characterized by unsteady shock oscillations at the inlet. This paper presents a comprehensive review of prior research, focused on unraveling the mechanisms that trigger buzz and its implications for engine stability and performance. The literature survey delves into studies concerning complex-shaped diffusers and isolators, offering a thorough examination of flow aerodynamics in unstable environments. Furthermore, this paper provides an overview of contemporary techniques for mitigating flow instability through both active and passive flow control methods. These techniques encompass boundary layer bleeding, the application of vortex generators, and strategies involving mass injection and energy deposition. The study concludes by discussing future prospects in the domain of engine-intake aerodynamic compatibility. This work serves as a valuable resource for researchers and engineers striving to address and understand the complexities of high-speed air induction systems.

show abstract