| Инд. авторы: | Grigor'ev Y.N., Ershov I.V. |
| Заглавие: | Linear Stability of the Boundary Layer of Relaxing Gas on a Plate |
| Библ. ссылка: | Grigor'ev Y.N., Ershov I.V. Linear Stability of the Boundary Layer of Relaxing Gas on a Plate // Fluid Dynamics. - 2019. - Vol.54. - Iss. 3. - P.295-307. - ISSN 0015-4628. - EISSN 1573-8507. |
| Внешние системы: | DOI: 10.1134/S0015462819030054; РИНЦ: 41638553; SCOPUS: 2-s2.0-85068607558; WoS: 000473494700001; |
| Реферат: | eng: The development of inviscid and viscous two-dimensional subsonic disturbances in the supersonic flat-plate boundary layer of a vibrationally excited gas is investigated on the basis of the linear stability theory. The system of two-temperature gas dynamics which includes the Landau-Teller relaxation equation is used as the initial model. Undisturbed flow is described by the self-similar boundary-layer solution for a perfect gas. It is shown that in the inviscid approximation excitation decreases the maximum growth rate of the most unstable second mode by 10-12% as compared with an ideal gas. The neutral stability curves are calculated for the first and second most unstable modes at the Mach numbers M = 2.2, 4.5, and 4.8. For both modes the critical Reynolds numbers at maximum excitation are greater by 12-13% than the corresponding values for the perfect gas.
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| Ключевые слова: | critical Reynolds numbers; unstable modes; linear stability; |
| Издано: | 2019 |
| Физ. характеристика: | с.295-307 |
