Developments and evolutions of three-dimensional perturbations in transitional boundary layer

Hui Guo; Qixiang Lian; Yury S. Kachanov; Vladimir I. Borodulin

Developments and evolutions of three-dimensional perturbations in transitional boundary layer

Hui Guo^*
, Qixiang Lian
, Yury S. Kachanov
, Vladimir I. Borodulin

^*Corresponding author for this work

School of Aeronautic Science and Engineering

Beihang University
Siberian Branch of Russian Academy of Sciences

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

1 Scopus citations

Abstract

Formations and developments of typical 3-D perturbations were observed by means of hydrogen-bubble method in a transitional flat-plate boundary-layer excited by a modulated 2-D artificial perturbation. Visual results show the relationships between a hairpin vortex and a spike structure, which convince the forming mechanisms of spike structures. Dark spots, often detected in turbulent boundary layer, are also observed during flow breakdown, and results show that the instability of local high-shear layer caused by dark spots is probably responsible for flow breakdown.

Original language	English
Pages (from-to)	501-504
Number of pages	4
Journal	Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
Volume	29
Issue number	6
State	Published - Jun 2003

Keywords

Artificial excitation
Boundary layer transition
Flow characteristics
Flow visualization

Cite this

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title = "Developments and evolutions of three-dimensional perturbations in transitional boundary layer",

abstract = "Formations and developments of typical 3-D perturbations were observed by means of hydrogen-bubble method in a transitional flat-plate boundary-layer excited by a modulated 2-D artificial perturbation. Visual results show the relationships between a hairpin vortex and a spike structure, which convince the forming mechanisms of spike structures. Dark spots, often detected in turbulent boundary layer, are also observed during flow breakdown, and results show that the instability of local high-shear layer caused by dark spots is probably responsible for flow breakdown.",

keywords = "Artificial excitation, Boundary layer transition, Flow characteristics, Flow visualization",

author = "Hui Guo and Qixiang Lian and Kachanov, \{Yury S.\} and Borodulin, \{Vladimir I.\}",

year = "2003",

month = jun,

language = "英语",

volume = "29",

pages = "501--504",

journal = "Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics",

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TY - JOUR

T1 - Developments and evolutions of three-dimensional perturbations in transitional boundary layer

AU - Guo, Hui

AU - Lian, Qixiang

AU - Kachanov, Yury S.

AU - Borodulin, Vladimir I.

PY - 2003/6

Y1 - 2003/6

N2 - Formations and developments of typical 3-D perturbations were observed by means of hydrogen-bubble method in a transitional flat-plate boundary-layer excited by a modulated 2-D artificial perturbation. Visual results show the relationships between a hairpin vortex and a spike structure, which convince the forming mechanisms of spike structures. Dark spots, often detected in turbulent boundary layer, are also observed during flow breakdown, and results show that the instability of local high-shear layer caused by dark spots is probably responsible for flow breakdown.

AB - Formations and developments of typical 3-D perturbations were observed by means of hydrogen-bubble method in a transitional flat-plate boundary-layer excited by a modulated 2-D artificial perturbation. Visual results show the relationships between a hairpin vortex and a spike structure, which convince the forming mechanisms of spike structures. Dark spots, often detected in turbulent boundary layer, are also observed during flow breakdown, and results show that the instability of local high-shear layer caused by dark spots is probably responsible for flow breakdown.

KW - Artificial excitation

KW - Boundary layer transition

KW - Flow characteristics

KW - Flow visualization

UR - https://www.scopus.com/pages/publications/0141732121

M3 - 文章

AN - SCOPUS:0141732121

SN - 1001-5965

VL - 29

SP - 501

EP - 504

JO - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

JF - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

IS - 6

ER -

Developments and evolutions of three-dimensional perturbations in transitional boundary layer

Abstract

Keywords

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