On the neutral stability of a shock wave in real media

Autor:	A. M. Oparin, Vladimir E. Fortov, A. P. Likhachev, A. V. Konyukhov, Sergei I. Anisimov, Igor V. Lomonosov, Konstantin V. Khishchenko
Rok vydání:	2009
Předmět:	Shock wave Physics Equation of state Van der Waals equation Physics and Astronomy (miscellaneous) Astrophysics::High Energy Astrophysical Phenomena Front (oceanography) Mechanics Moving shock symbols.namesake Amplitude symbols Oblique shock SIMPLE algorithm
Zdroj:	JETP Letters. 90:18-24
ISSN:	1090-6487 0021-3640
DOI:	10.1134/s0021364009130050
Popis:	The results of the theoretical analysis and computer simulation of the behavior of neutrally stable shock waves with real (van der Waals gas, magnesium) equations of state are presented. An approach is developed in which the region of the neutral stability of a shock wave for each pressure value in front of the wave is determined from the analysis of the equation of state. A simple algorithm is developed to determine the cause of acoustic perturbations (a shock front or an external source) immediately from the flow pattern. In contrast to the predictions of the linear theory, the amplitude of the perturbations of the neutrally stable shock wave decreases with time, although this process is noticeably slower than in the case of an absolutely stable shock wave.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c1d7e2c424f11633115b3c2e14906b77 https://doi.org/10.1134/s0021364009130050 Zobrazit plný text záznamu Plný text ve formátu PDF