Combined influence of coating permeability and roughness on supersonic boundary layer stability and transition

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Combined influence of coating permeability and roughness on supersonic boundary layer stability and transition. / Lysenko, V. I.; Gaponov, S. A.; Smorodsky, B. V. et al.

In: Journal of Fluid Mechanics, Vol. 798, 10.07.2016, p. 751-773.

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

Author

Lysenko, V. I. ; Gaponov, S. A. ; Smorodsky, B. V. et al. / Combined influence of coating permeability and roughness on supersonic boundary layer stability and transition. In: Journal of Fluid Mechanics. 2016 ; Vol. 798. pp. 751-773.

BibTeX

@article{9a09f398c5374f2383a01d23f8afdd9a,

title = "Combined influence of coating permeability and roughness on supersonic boundary layer stability and transition",

abstract = "A joint theoretical and experimental investigation of the influence of the surface permeability and roughness on the stability and laminar-turbulent transition of a supersonic flat-plate boundary layer at a free-stream Mach number of M∞ = 2 has been performed. Good quantitative agreement of the experimental data obtained with artificially generated disturbances performed on models with various porous inserts and calculations based on linear stability theory has been achieved. An increase of the pore size and porous-coating thickness leads to a boundary layer destabilization that accelerates the laminar-turbulent transition. It is shown that as a certain (critical) roughness value is reached, with an increase in the thickness of the rough and porous coating, the boundary layer stability diminishes and the laminar-turbulent transition is displaced towards the leading edge of the model.",

keywords = "Boundary layer stability, compressible boundary layers, transition to turbulence",

author = "Lysenko, {V. I.} and Gaponov, {S. A.} and Smorodsky, {B. V.} and Yermolaev, {Yu G.} and Kosinov, {A. D.} and Semionov, {N. V.}",

year = "2016",

month = jul,

day = "10",

doi = "10.1017/jfm.2016.347",

language = "English",

volume = "798",

pages = "751--773",

journal = "Journal of Fluid Mechanics",

issn = "0022-1120",

publisher = "Cambridge University Press",

}

RIS

TY - JOUR

T1 - Combined influence of coating permeability and roughness on supersonic boundary layer stability and transition

AU - Lysenko, V. I.

AU - Gaponov, S. A.

AU - Smorodsky, B. V.

AU - Yermolaev, Yu G.

AU - Kosinov, A. D.

AU - Semionov, N. V.

PY - 2016/7/10

Y1 - 2016/7/10

N2 - A joint theoretical and experimental investigation of the influence of the surface permeability and roughness on the stability and laminar-turbulent transition of a supersonic flat-plate boundary layer at a free-stream Mach number of M∞ = 2 has been performed. Good quantitative agreement of the experimental data obtained with artificially generated disturbances performed on models with various porous inserts and calculations based on linear stability theory has been achieved. An increase of the pore size and porous-coating thickness leads to a boundary layer destabilization that accelerates the laminar-turbulent transition. It is shown that as a certain (critical) roughness value is reached, with an increase in the thickness of the rough and porous coating, the boundary layer stability diminishes and the laminar-turbulent transition is displaced towards the leading edge of the model.

AB - A joint theoretical and experimental investigation of the influence of the surface permeability and roughness on the stability and laminar-turbulent transition of a supersonic flat-plate boundary layer at a free-stream Mach number of M∞ = 2 has been performed. Good quantitative agreement of the experimental data obtained with artificially generated disturbances performed on models with various porous inserts and calculations based on linear stability theory has been achieved. An increase of the pore size and porous-coating thickness leads to a boundary layer destabilization that accelerates the laminar-turbulent transition. It is shown that as a certain (critical) roughness value is reached, with an increase in the thickness of the rough and porous coating, the boundary layer stability diminishes and the laminar-turbulent transition is displaced towards the leading edge of the model.

KW - Boundary layer stability

KW - compressible boundary layers

KW - transition to turbulence

UR - http://www.scopus.com/inward/record.url?scp=84974589149&partnerID=8YFLogxK

U2 - 10.1017/jfm.2016.347

DO - 10.1017/jfm.2016.347

M3 - Article

AN - SCOPUS:84974589149

VL - 798

SP - 751

EP - 773

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

SN - 0022-1120

ER -

ID: 25840427