Study of the Mechanism of Breakdown in Laminar-Turbulent Transition of a Supersonic Boundary Layer on a Flat Plate

CAO Wei; HUANG Zhang-feng; ZHOU Heng

Article Contents

Article Navigation > Applied Mathematics and Mechanics > 2006 > 27(4): 379-386

CAO Wei, HUANG Zhang-feng, ZHOU Heng. Study of the Mechanism of Breakdown in Laminar-Turbulent Transition of a Supersonic Boundary Layer on a Flat Plate[J]. Applied Mathematics and Mechanics, 2006, 27(4): 379-386.

Citation:

PDF( 339 KB)

Study of the Mechanism of Breakdown in Laminar-Turbulent Transition of a Supersonic Boundary Layer on a Flat Plate

1.
Department of Mechanics, Tianjin University, Tianjin 300072, P. R. China;

Received Date: 2005-05-13
Rev Recd Date: 2005-12-20
Publish Date: 2006-04-15

Abstract

Abstract

Spatial mode direct numerical simulation has been applied to the study of the mechanism of breakdown in laminar-turbulent transition of a supersonic boundary layer on a flat plate with Mach number 4.5.Analysis of the result showed that,during the breakdown process in laminar-turbulent transition,the mechanism causing the mean flow profile to evolve swiftly from laminar to turbulent was that the modification of mean flow profile by the disturbance,when they became larger,leads to remarkable change of its stability characteristics.Though the most unstable T-S wave was of second mode for laminar flow,the first mode waves played the key role in the breakdown process in laminarturbulent transition.
- supersonic boundary layer,
- transition,
- breakdown,
- spatial mode

FullText(HTML)

References(7)

References

[1]	Mack L M.Boundary layer linear stability theory[R]. Advisory Group for Aerospace Reserach & Development Rep,1984,709.
[2]	Stetson K F, Kimmel R L.On hypersonic boundary layer stability[R]. AIAA Paper,0737,1992.
[3]	Bountin D A,Sidorenko A A,Shiplyuk A N.Development of natural disturbances in a hypersonic boundary layer on a sharp cone[J].Journal of Applied Mechanics and Technical Physics,2001,42(1):57—62. doi: 10.1023/A:1018852410488
[4]	Malik M R.Hypersonic flight transition data analysis using parabolized stability equations with chemistry effects[J].J Spacecraft Rockets,2003,40(3):332—344. doi: 10.2514/2.3968
[5]	王新军,罗纪生,周恒.平面槽道流中层流-湍流转捩的“breakdown”过程的内在机理[J].中国科学,G辑,2005,35(1):71—78.
[6]	黄章峰,曹伟,周恒.超音速平板边界层转捩中层流突变为湍流的机理——时间模式[J].中国科学,G辑,2005,35(5):537—547.
[7]	Poinsot T J,Lele S K.Boundary conditions for direct simulations of compressible viscous flows[J].Journal of Computational Physics,1992,101(1):104—129. doi: 10.1016/0021-9991(92)90046-2