Evolution of laminar flow disturbances behind a step on a surface generated by its localized vibrations. / Dovgal, A. V.; Katasonov, M. M.; Kozlov, V. V. et al.
In: Fluid Dynamics, Vol. 52, No. 3, 01.05.2017, p. 394-400.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Evolution of laminar flow disturbances behind a step on a surface generated by its localized vibrations
AU - Dovgal, A. V.
AU - Katasonov, M. M.
AU - Kozlov, V. V.
AU - Pavlenko, A. M.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - The formation and development of hydrodynamic disturbances generated by low-frequency vibrations of a local region on a flat plate behind a rectangular step in separated flow is investigated in a wind tunnel. The results are obtained at a small subsonic flow velocity using the hot-wire anemometry. It is established that the wall vibrations induce separation zone disturbances representing streaky structures accompanied by wave oscillation packets. Laminar boundary layer separation favors the wave packet growth followed by wall flow turbulization.
AB - The formation and development of hydrodynamic disturbances generated by low-frequency vibrations of a local region on a flat plate behind a rectangular step in separated flow is investigated in a wind tunnel. The results are obtained at a small subsonic flow velocity using the hot-wire anemometry. It is established that the wall vibrations induce separation zone disturbances representing streaky structures accompanied by wave oscillation packets. Laminar boundary layer separation favors the wave packet growth followed by wall flow turbulization.
KW - flow separation
KW - hydrodynamic stability
KW - streaky structures
KW - transition to turbulence
KW - wave packets
UR - http://www.scopus.com/inward/record.url?scp=85021288618&partnerID=8YFLogxK
U2 - 10.1134/S0015462817030073
DO - 10.1134/S0015462817030073
M3 - Article
AN - SCOPUS:85021288618
VL - 52
SP - 394
EP - 400
JO - Fluid Dynamics
JF - Fluid Dynamics
SN - 0015-4628
IS - 3
ER -
ID: 25833623