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The Anomalous Suction Effect on Instability of a Supersonic Boundary Layer

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Abstract

The results of investigation of the stability of the near-wall flow in a supersonic flow around a flat plate with a section of gas suction from the boundary layer through the wall are presented. The suction system is usually considered as a way for stabilizing the boundary layer and delaying the laminar–turbulent transition, which operates at subsonic and low supersonic speeds. Here, the effect of suction on the development of instabilities in the boundary layer is investigated at high supersonic speeds. The laminar flow around a plate with a section of constant suction of different intensity is modeled numerically by integrating the Navier–Stokes equations. The instabilities in the boundary layer distorted by suction are analyzed within the framework of the linear stability theory using the eN method. High-frequency disturbances related to plane waves of the second Mack mode, which is most unstable at high velocities, are considered. It is found that the instabilities over the suction section can anomalously be amplified more strongly than in the case without suction.

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Funding

This study was supported by the Russian Science Foundation, project no. 19-19-00470.

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Authors and Affiliations

  1. Zhukovskii Central Aerohydrodynamic Institute, 140160, Zhukovskii, Moscow oblast, Russia

    I. V. Egorov, A. V. Novikov & A. O. Obraz

  2. Moscow Institute of Physics and Technology (National Investigation University), 141700, Dolgoprudnyi, Moscow oblast, Russia

    I. V. Egorov, A. V. Novikov & A. O. Obraz

Authors
  1. I. V. Egorov
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  2. A. V. Novikov
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  3. A. O. Obraz
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Corresponding authors

Correspondence to I. V. Egorov, A. V. Novikov or A. O. Obraz.

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Translated by V. Bukhanov

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Egorov, I.V., Novikov, A.V. & Obraz, A.O. The Anomalous Suction Effect on Instability of a Supersonic Boundary Layer. Dokl. Phys. 67, 110–113 (2022). https://doi.org/10.1134/S1028335822040012

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  • DOI: https://doi.org/10.1134/S1028335822040012

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