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A new method of controlling cavity-induced pressure oscillations using sub-cavity

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Abstract

A new passive control technique of cavity-induced pressure oscillations has been investigated numerically for a supersonic two-dimensional flow over open rectangular cavities at Mac h number 1.83 at the cavity entrance. A subcavity on the front wall of the cavity covered by a flat plate was evaluated for the effectiveness of controlling cavity-induced acoustic oscillations. The results showed that sub-cavity is very effective in reducing cavity-induced pressure oscillations. The results also showed that the resultant amount of attenuation of cavity-induced pressure oscillations was dependent on the length and thickness of the flat plate, and also on the depth of the sub-cavity used as an oscillation suppressor.

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Authors and Affiliations

  1. Graduate School of Science and Engineering, Saga University, 840-8502, Saga, Japan

    Md. Mahbubul Alam

  2. Department of Mechanical Engineering, Saga University, 840-8502, Saga, Japan

    Shigeru Matsuob, Kenbu Teramotob & Toshiaki Setoguchib

  3. School of Mechanical Engineering, Andong National University, Andong, Republic of Korea

    Heuy-Dong Kim

Authors
  1. Md. Mahbubul Alam
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  2. Shigeru Matsuob
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  3. Kenbu Teramotob
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  4. Toshiaki Setoguchib
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  5. Heuy-Dong Kim
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Correspondence to Shigeru Matsuob.

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Alam, M.M., Matsuob, S., Teramotob, K. et al. A new method of controlling cavity-induced pressure oscillations using sub-cavity. J Mech Sci Technol 21, 1398 (2007). https://doi.org/10.1007/BF03177426

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  • DOI: https://doi.org/10.1007/BF03177426

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