Theoretical analysis of acoustic instability of a hypersonic shock layer on a porous wall

Fedorov, Alexander and Yumashev, Dmitry (2005) Theoretical analysis of acoustic instability of a hypersonic shock layer on a porous wall. Journal of Applied Mechanics and Technical Physics, 46 (1). pp. 33-41. ISSN 1573-8620

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Abstract

The possibility of controlling the laminar–turbulent transition in hypersonic shock layers by means of porous coatings is considered. The linear stability of the shock layer to acoustic disturbances is analyzed. A dispersion relation is derived in an analytical form and analyzed for different characteristic values of porosity of the wall, which allows one to study the spectrum of acoustic disturbances in the shock layer. Analytical expressions for the growth rate of instability of acoustic disturbances are presented as functions of the reflection factor. Their structure indicates that the porous coating effectively decreases acoustic instability of the shock layer.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Applied Mechanics and Technical Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
84481
Deposited By:
Deposited On:
31 Jan 2017 16:52
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 10:11