Two-Dimensional Autowave Gas-Dynamic Structures in Isentropically Unstable Heat-Releasing Gas
- Авторы: Ryashchikov D.1,2, Molevich N.1,2, Zavershinskii D.1
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Учреждения:
- Samara National Research University
- Department of Theoretical Physics, Lebedev Physical Institute (Samara Branch)
- Выпуск: Том 44, № 12 (2018)
- Страницы: 1163-1166
- Раздел: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208153
- DOI: https://doi.org/10.1134/S1063785018120532
- ID: 208153
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Аннотация
The evolution of gas-dynamic perturbations in a heat-releasing medium was investigated in two-dimensional geometry under conditions of isentropic instability. Decomposition of the initial perturbation of “step” type, possessing transversal modulation (ripples) of front, into a sequence of flat autowave fronts predicted by a generalized nonlinear acoustic equation is shown. Evolution of localized perturbation results in decomposition into sequence of concentric autowaves. The front of two-dimensional structures is resistant to transversal modulation. A quasi-regular cellular structure is formed behind the fronts.
Об авторах
D. Ryashchikov
Samara National Research University; Department of Theoretical Physics, Lebedev Physical Institute (Samara Branch)
Автор, ответственный за переписку.
Email: ryashchikovd@gmail.com
Россия, Samara, 443086; Samara, 443011
N. Molevich
Samara National Research University; Department of Theoretical Physics, Lebedev Physical Institute (Samara Branch)
Email: ryashchikovd@gmail.com
Россия, Samara, 443086; Samara, 443011
D. Zavershinskii
Samara National Research University
Email: ryashchikovd@gmail.com
Россия, Samara, 443086