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Research on Triggering Mechanism of a Supersonic Inlet Buzz
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Xiangdong Guan1, Hongdong Li1, Yanjin Man1, 2, Shoumei Zhu1, 2
Aerodynamic Research & Experiment | 2025, 3(5) : 78 - 87
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Aerodynamic Research & Experiment | 2025, 3(5): 78-87
• Research •
Research on Triggering Mechanism of a Supersonic Inlet Buzz
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Xiangdong Guan1, Hongdong Li1, Yanjin Man1, 2, Shoumei Zhu1, 2
Affiliations
  • 1.Beijing Power Machinery Institute，Beijing 100074，China
  • 2.Science and Technology on Scramjet Laboratory，Beijing Power Machinery Institute，Beijing 100074，China
Published: 2025-09-10 doi: 10.20118/j.issn2097-258X.2025.05.007
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The purpose of this study is to explore the influence of the internal channel configuration of supersonic inlet on stable subcritical condition and buzz, the numerical simulations of inlet schemes with the same external-compression configuration and different internal channel configurations are carried out. The study object is a two-dimensional external compression inlet with a shock-on-lip Mach number of 3.0. Six internal channel configurations are studied at freestream Mach number of 2.0. The working process of each inlet from stable subcritical condition to little buzz and big buzz is obtained. The results show that the internal channel configuration has an important impact on the subcritical characteristics of inlet. The scheme with short internal channel and small outlet height has broad stable subcritical range and big buzz which seems to be triggered by Dailey criterion. The scheme with long internal channel and large outlet height has narrow stable subcritical range, and its buzzes include little buzz and big buzz. The little buzz is independent of the common buzz triggering criterion (Ferri criterion and Dailey criterion). A little buzz formation mechanism of terminal shock/cavity coupled self-excited oscillation is proposed. The study is helpful to increase the understanding of buzz formation mechanism.

supersonic inlet  /  unsteady  /  CFD  /  buzz  /  self-excited oscillation
Xiangdong Guan, Hongdong Li, Yanjin Man, Shoumei Zhu. Research on Triggering Mechanism of a Supersonic Inlet Buzz[J]. Aerodynamic Research & Experiment, 2025 , 3 (5) : 78 -87 . DOI: 10.20118/j.issn2097-258X.2025.05.007
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Article Info
doi: 10.20118/j.issn2097-258X.2025.05.007
  • Receive Date：2025-06-26
  • Online Date：2026-03-27
  • Published：2025-09-10
Article Data
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  • Received：2025-06-26
  • Revised：2025-07-29
Affiliations
    1.Beijing Power Machinery Institute，Beijing 100074，China
    2.Science and Technology on Scramjet Laboratory，Beijing Power Machinery Institute，Beijing 100074，China
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https://castjournals.cast.org.cn/joweb/qdyjysy/EN/10.20118/j.issn2097-258X.2025.05.007
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表12种不同金属材料的力学参数
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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