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Energy Estimate of the Critical Reynolds Numbers in a Compressible Couette Flow. Effect of Bulk Viscosity

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Abstract

A variational problem of determining the critical Reynolds number of the laminar-turbulent transition is numerically solved within the framework of the nonlinear energy theory of stability of compressible flows. Stability of various modes in the Couette flow of a compressible gas is estimated by the method of collocations. It is demonstrated that the minimum critical Reynolds numbers in the range of the ratio of the bulk viscosity ηb to the shear viscosity η, which is realistic for diatomic gases, are reached for modes of streamwise disturbances. The critical Reynolds numbers increase as the bulk viscosity is increased in the interval ηb = 0-2η, with the maximum increase in the limit being approximately 30%.

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Authors and Affiliations

  1. Institute of Computational Technologies, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    Yu. N. Grigors’ev

  2. Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, 630008, Russia

    I. V. Ershov

Authors
  1. Yu. N. Grigors’ev
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  2. I. V. Ershov
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Correspondence to Yu. N. Grigors’ev.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 51, No. 5, pp. 59–67, September–October, 2010

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Grigors’ev, Y.N., Ershov, I.V. Energy Estimate of the Critical Reynolds Numbers in a Compressible Couette Flow. Effect of Bulk Viscosity. J Appl Mech Tech Phy 51, 669–675 (2010). https://doi.org/10.1007/s10808-010-0086-y

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  • DOI: https://doi.org/10.1007/s10808-010-0086-y

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