Инд. авторы:	Grigoryev Y.N., Ershov I.V.
Заглавие:	Critical reynolds number of the couette flow of a vibrationally excited diatomic gas energy approach
Библ. ссылка:	Grigoryev Y.N., Ershov I.V. Critical reynolds number of the couette flow of a vibrationally excited diatomic gas energy approach // Journal of Applied Mechanics and Technical Physics. - 2012. - Vol.53. - Iss. 4. - P.517-531. - ISSN 0021-8944. - EISSN 1573-8620.
Внешние системы:	DOI: 10.1134/S0021894412040062; РИНЦ: 20471121; SCOPUS: 2-s2.0-84865403105; WoS: 000307279900006;
Реферат:	eng: An energy balance equation for plane-parallel flows of a vibrationally excited diatomic gas described by a two-temperature relaxation model is derived within the framework of the nonlinear energy theory of hydrodynamic stability. A variational problem of calculating critical Reynolds numbers Re-cr determining the lower boundary of the possible beginning of the laminar-turbulent transition is considered for this equation. Asymptotic estimates of Re-cr are obtained, which show the characteristic dependences of the critical Reynolds number on the Mach number, bulk viscosity, and relaxation time. A problem for arbitrary wave numbers is solved by the collocation method. In the realistic range of flow parameters for a diatomic gas, the minimum critical Reynolds numbers are reached on modes of streamwise disturbances and increase approximately by a factor of 2.5 as the flow parameters increase.
Издано:	2012
Физ. характеристика:	с.517-531