Analysis of the development of perturbations in a hypersonic boundary layer behind a wavy surface

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Analysis of the development of perturbations in a hypersonic boundary layer behind a wavy surface. / Bountin, D. A.; Maslov, A. A.

In: Technical Physics Letters, Vol. 43, No. 7, 01.07.2017, p. 623-626.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{9d6b0b769a17449fadd4c334e733cdce,

title = "Analysis of the development of perturbations in a hypersonic boundary layer behind a wavy surface",

abstract = "The stability of a supersonic near-wall flow above a finely corrugated plate in the incident flow inside an aerodynamic tube with a Mach number of 6 has been studied experimentally. We obtained the perturbation growth coefficients that show that a wavy wall stabilizes the flow in the boundary layer with respect to the perturbations of the second mode, but it destabilizes the perturbations of the first mode. A bispectral analysis of perturbations is carried out. It is shown that with decreasing pulsation amplitudes of the second mode, nonlinear processes in the boundary layer behind the wavy surface become strongly suppressed: there is no harmonic resonance of the second mode, and nonlinear processes in the low-frequency region of the spectrum have an interaction amplitude that is an order of magnitude smaller and a much more limited frequency range. Due to the stabilizing effect of a wavy surface on perturbations of the second mode, the onset of a laminar-turbulent transition is generally delayed.",

author = "Bountin, {D. A.} and Maslov, {A. A.}",

note = "Publisher Copyright: {\textcopyright} 2017, Pleiades Publishing, Ltd.",

year = "2017",

month = jul,

day = "1",

doi = "10.1134/S1063785017070021",

language = "English",

volume = "43",

pages = "623--626",

journal = "Technical Physics Letters",

issn = "1063-7850",

publisher = "PLEIADES PUBLISHING INC",

number = "7",

}

RIS

TY - JOUR

T1 - Analysis of the development of perturbations in a hypersonic boundary layer behind a wavy surface

AU - Bountin, D. A.

AU - Maslov, A. A.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - The stability of a supersonic near-wall flow above a finely corrugated plate in the incident flow inside an aerodynamic tube with a Mach number of 6 has been studied experimentally. We obtained the perturbation growth coefficients that show that a wavy wall stabilizes the flow in the boundary layer with respect to the perturbations of the second mode, but it destabilizes the perturbations of the first mode. A bispectral analysis of perturbations is carried out. It is shown that with decreasing pulsation amplitudes of the second mode, nonlinear processes in the boundary layer behind the wavy surface become strongly suppressed: there is no harmonic resonance of the second mode, and nonlinear processes in the low-frequency region of the spectrum have an interaction amplitude that is an order of magnitude smaller and a much more limited frequency range. Due to the stabilizing effect of a wavy surface on perturbations of the second mode, the onset of a laminar-turbulent transition is generally delayed.

AB - The stability of a supersonic near-wall flow above a finely corrugated plate in the incident flow inside an aerodynamic tube with a Mach number of 6 has been studied experimentally. We obtained the perturbation growth coefficients that show that a wavy wall stabilizes the flow in the boundary layer with respect to the perturbations of the second mode, but it destabilizes the perturbations of the first mode. A bispectral analysis of perturbations is carried out. It is shown that with decreasing pulsation amplitudes of the second mode, nonlinear processes in the boundary layer behind the wavy surface become strongly suppressed: there is no harmonic resonance of the second mode, and nonlinear processes in the low-frequency region of the spectrum have an interaction amplitude that is an order of magnitude smaller and a much more limited frequency range. Due to the stabilizing effect of a wavy surface on perturbations of the second mode, the onset of a laminar-turbulent transition is generally delayed.

UR - http://www.scopus.com/inward/record.url?scp=85028081343&partnerID=8YFLogxK

U2 - 10.1134/S1063785017070021

DO - 10.1134/S1063785017070021

M3 - Article

AN - SCOPUS:85028081343

VL - 43

SP - 623

EP - 626

JO - Technical Physics Letters

JF - Technical Physics Letters

SN - 1063-7850

IS - 7

ER -

ID: 9962618