Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-01-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/11/1/75 |
| _version_ | 1827372969443196928 |
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| author | Aristia L. Philippou Pavlos K. Zachos David G. MacManus |
| author_facet | Aristia L. Philippou Pavlos K. Zachos David G. MacManus |
| author_sort | Aristia L. Philippou |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-08T11:09:57Z |
| format | Article |
| id | doaj.art-fb239e7f0ae54396a4cae73752376211 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-08T11:09:57Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-fb239e7f0ae54396a4cae737523762112024-01-26T14:13:37ZengMDPI AGAerospace2226-43102024-01-011117510.3390/aerospace11010075Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System IntegrationAristia L. Philippou0Pavlos K. Zachos1David G. MacManus2Centre for Propulsion and Thermal Power Engineering, School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKCentre for Propulsion and Thermal Power Engineering, School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKCentre for Propulsion and Thermal Power Engineering, School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKHigh-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.https://www.mdpi.com/2226-4310/11/1/75high-speed intakebuzzflow unstartunsteady flowflow distortionboundary layer control |
| spellingShingle | Aristia L. Philippou Pavlos K. Zachos David G. MacManus Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration Aerospace high-speed intake buzz flow unstart unsteady flow flow distortion boundary layer control |
| title | Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration |
| title_full | Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration |
| title_fullStr | Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration |
| title_full_unstemmed | Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration |
| title_short | Aerodynamic Instabilities in High-Speed Air Intakes and Their Role in Propulsion System Integration |
| title_sort | aerodynamic instabilities in high speed air intakes and their role in propulsion system integration |
| topic | high-speed intake buzz flow unstart unsteady flow flow distortion boundary layer control |
| url | https://www.mdpi.com/2226-4310/11/1/75 |
| work_keys_str_mv | AT aristialphilippou aerodynamicinstabilitiesinhighspeedairintakesandtheirroleinpropulsionsystemintegration AT pavloskzachos aerodynamicinstabilitiesinhighspeedairintakesandtheirroleinpropulsionsystemintegration AT davidgmacmanus aerodynamicinstabilitiesinhighspeedairintakesandtheirroleinpropulsionsystemintegration |