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吴雪松(天津大学教授)

吴雪松,男,教授、博导。执教于天津大学机械工程学院,专业,流体力学、应用数学。

1985.10-1988.7 在天津大学力学系攻读硕士学位

1988.10-1991.12 在英国帝国理工学院数学系攻读博士学位

1992.3-1993.9 在英国帝国理工学院数学系从事博士后研究

1993.10-1999.9 在英国帝国理工学院数学系任讲师。

1999.9-至今 在英国帝国理工学院数学系任高级讲师。

2001.10-至今 在天津大学力学系任特聘教授。

非线性流动稳定性

层流-湍流转捩的理论研究

主要讲授课程:流体力学

高等常微分方程

微分方程的差分方法

复变函数及变分法

高雷诺数流动及边界层理论

1. 发展了次谐共振的数学描述。推导的幅值方程可以同时适用两类不同不稳定波所形成的三波共振问题

2. 提出"锁相位模态相互作用"和"混合模态三波共振"的模型。证明了三维扰动波的瞬态增长,并最终使

三维波按超指数规律放大的机理

3. 提出由斜波直接引起转捩的理论。统一两种现有的理论,系统地研究了一对三维波从线性,经过一系

列弱非线性,最终到强非线性,引起转捩的演化过程

4. 在边界层的'接受性'机理方面提出了来流中的声波和漩涡涨落直接激发不稳定波的机理

 

1994年,课题"Nonlinear Interaction of Instability Modes in Stratified Shear Flows: Vortex Roll-up and Pairing"获Nuffield Foundation资助。项目经费:3,000英磅。

1997年,课题"Nonlinear Modal Interactions in Transitional Flows"获英国EPSRC资助。项目经费:42,218英磅。

1998年,课题"Randomization of Transitional flows"获英国皇家学会 (The Royal Society) 资助。项目经费:7,042英磅。

1. Wu, X & Zhou, H. Linear instability of turbulent boundary layer as a mechanism for the

generation of large scale coherent structures. Chinese Science Bulletin English Edition,

34(20): 1685-1688, 1989

2. Wu, X. The nonlinear evolution of high-frequency resonant-triad waves in Stokes-Layers

at high Reynolds numbers. J. Fluid Mech. 245: 553-597, 1992

3. Wu, X., Lee, S.S. & Cowley, S.J. On the weakly nonlinear instability of shear flows to

pairs of oblique waves: the Stokes layer as a paradigm. J. Fluid Mech. 253: 681-720, 1993

Also published as NASA Technical Memorandum: NASA TM-105918: 92-20, 1992

4. Wu, X. On critical-layer and diffusion-layer nonlinearity in the three-dimensional stage of

boundary-layer transition. Proc. Roy. Soc. Lon. A443: 95-106, 1993

5. Mankbadi, R.R., Wu, X. & Lee, S.S. A critical-layer analysis of resonant triad in Blasius

boundary layer transition: nonlinear interactions. J. Fluid Mech. 256: 85-106, 1993

6. Wu, X. Nonlinear temporal-spatial modulation of near-planar Rayleigh waves in shear

flows: formation of streamwise vortices. J. Fluid Mech. 256 : 685-719, 1993

7. Wu, X. & Cowley, S.J. On the nonlinear evolution of instability modes in unsteady shear

layers: the Stokes layer as a paradigm. Q. J. Mech. Appl. Math. 48: 159-188, 1995

8. Wu, X. 1995 Viscous effects on fully coupled resonant-triad interactions: an analytical

approach. J. Fluid Mech. 292: 377-407, 1995

9. Wu, X. On an active resonant triad of mixed modes in symmetric shear flows: a plane

wake as a paradigm. J. Fluid Mech. 317: 337-368, 1996

10. Wu, X. & Stewart, P.A. Interaction of phase-locked modes: a new mechanism for the

rapid growth of three-dimensional disturbances. J. Fluid Mech. 316: 335-372, 1996

11. Wu, X., Stewart, P.A. & Cowley, S.J. On the weakly nonlinear development of Tollmien-

Schlichting wavetrains in boundary layers. J. Fluid Mech. 323: 133-171, 1996

12. Elgin, J.N. & Wu, X. Stability of cellular states of the Kuramoto-Sivashinsky equation.

SIAM J. Appl. Maths. 56: 1621-1638, 1996

13. Wu, X., Leib, S.J. & Goldstein, M.E. On the nonlinear evolution of a pair of oblique

Tollmien-Schlichting waves in boundary layers. J. Fluid Mech. 340: 361-394, 1997

14. Wu, X. Generation of Tollmien-Schlichting waves by convecting gusts interacting with

sound. J. Fluid Mech. 397: 285-316, 1999

15. Wu, X. Receptivity of boundary layers with distributed roughness to vortical and

acoustic disturbances: a second-order asymptotic theory and comparison with

experiments. J. Fluid Mech. 431: 91-133, 2001

16. Wu, X. On local boundary-layer receptivity to vortical disturbances in the free

stream. J. Fluid Mech. 449: 373-393, 2001

17. Wu, X. Generation of sound and instability waves due to unsteady suction and

injection. J. Fluid Mech., 453: 289-313, 2002

18. Floryan, J.M., Szumbarski, J. & Wu, X. Stability of flow in a channel with vibrating

walls. Phys. Fluids 14: 3927-2936, 2002

19. Wu, X. & Luo, J.S. Linear and nonlinear instability of a Blasius boundary layer perturbed

by streamwise vortices. Part I: Steady streaks. J. Fluid Mechanics, 2002

20. Wu, X. & Choudhari, M. Linear and nonlinear instability of a Blasius boundary layer

perturbed by streamwise vortices. Part II: Intermittent instability induced by long-wavelength

Klebanoff modes. J. Fluid Mechanics, 2002

21. Wu, X., Wang, M., Moin, P., et al, Combustion instability due to nonlinear

acoustic-flame interaction. J. Fluid Mechanics, 2002

22. Wu, X., Stewart, P.A. & Jennings, M.J. On the role of phase-locked interaction of

Tollmien-Schlichting waves in boundary-layer transition. J. Fluid Mechanics, 2002


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