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Numerical modeling of the disturbances of the separated flow in a rounded compression corner

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Abstract

Numerical modeling of the time-dependent supersonic flow over a compression corner with different roundness radii is performed on the basis of the solution of the two-dimensional Navier-Stokes equations in the regimes corresponding to local boundary layer separation. The development of unstable disturbances generated by local periodic injection/suction in the preseparated boundary layer is calculated. The results are compared with those of similar calculations for a flat plate. It is shown that the natural oscillations of the boundary-layer second mode stabilize in the separation zone and grow intensely downstream of the reattachment point. The acoustic modes excited within a separation bubble are studied using numerical calculations and an asymptotic analysis.

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Authors
  1. I. V. Egorov
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  2. A. V. Novikov
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  3. A. V. Fedorov
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Translated from Izvestiya Rossiiskoi Academii Nauk, Mekhanika Zhidkosti i Gaza, No. 4, 2006, pp. 39–49.

Original Russian Text Copyright © 2006 by Egorov, Novikov, and Fedorov.

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Egorov, I.V., Novikov, A.V. & Fedorov, A.V. Numerical modeling of the disturbances of the separated flow in a rounded compression corner. Fluid Dyn 41, 521–530 (2006). https://doi.org/10.1007/s10697-006-0070-7

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  • DOI: https://doi.org/10.1007/s10697-006-0070-7

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