Excitation and development of unstable disturbances in a supersonic boundary layer

Autor:	A. V. Fedorov, V. R. Gushchin
Rok vydání:	1990
Předmět:	Fluid Flow and Transfer Processes Physics Convection Mechanical Engineering General Physics and Astronomy Mechanics Instability WKB approximation Action (physics) Physics::Fluid Dynamics Boundary layer Classical mechanics Inviscid flow Supersonic speed Boundary value problem
Zdroj:	Fluid Dynamics. 25:344-352
ISSN:	1573-8507 0015-4628
DOI:	10.1007/bf01049814
Popis:	The initial-boundary value problem of the development of two-dimensional inviscid disturbances excited by an external unsteady local action, turned on at time t=0, is examined. The spectrum of the problem is investigated by means of the WKB method and numerical calculations, and the asymptotic expansions of the wave packets as t→∞ are found. It is shown that, contrary to the conclusions of [4], the inviscid instability of the supersonic boundary layer is convective. The reasons for this discrepancy are analyzed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::09a86b4a682e3e89ee85e4b5f2bfa74c https://doi.org/10.1007/bf01049814 Zobrazit plný text záznamu Full text from SpringerLink