NDLI: Linear stability of supersonic Couette flow of a molecular gas under the conditions of viscous stratification and excitation of the vibrational mode

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Linear stability of supersonic Couette flow of a molecular gas under the conditions of viscous stratification and excitation of the vibrational mode

Content Provider	Springer Nature Link
Author	Grigor’ev, Yu. N. Ershov, I. V.
Copyright Year	2017
Abstract	The linear stability of viscous two-dimensional perturbations in the supersonic plane Couette flow of perfect and vibrationally excited gases is investigated. In both cases an alternative is considered so that the transport coefficients were taken either constant or dependent on the static flow temperature. The Sutherland model is used to take the temperature dependence of the shear viscosity into account. It is shown that “viscous” stratification increases considerably the flow stability as compared with the case of constant viscosity. At the same time, the simple constant viscosity model conserves all characteristic features of the development of viscous perturbations in the Sutherland model. The dissipation effect of excitation of the vibrational mode is conserved in taking the temperature dependence of the transport coefficients into account. For both models the corresponding increase in the critical Reynolds number is of approximately 12%.
Starting Page	9
Ending Page	24
Page Count	16
File Format	PDF
ISSN	00154628
Journal	Fluid Dynamics
Volume Number	52
Issue Number	1
e-ISSN	15738507
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-03-05
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	linear stability Sutherland formula vibrational relaxation acoustic modes Fluid- and Aerodynamics Classical and Continuum Physics Classical Mechanics Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanical Engineering

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