Recent progress in dynamics of boundary layer transition
The dynamics in transitional boundary layers involve interactions among various flow structures. It is not easy to identify unambiguously the dominant structures which give the major turbulent production. In this paper, the flat plate boundary layer was studied by means of two-dimensional hot film velocity measurements and flow visualization. Our results present direct evidences of the existence of soliton-like coherent structures that are dominant flow structures in turbulent production processes for both the early and late stages of boundary layer transition. Furthermore, it is concluded that in boundary layer flows these soliton-like coherent structures are the building blocks to produce other coherent structures.
Key wordstransition boundary layer coherent structure soliton-like structures
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- Borodulin, V. I., Goponenko, V. R., Kachanov, Y. S., Meyer, D. G. W., Rist, U., Lian, Q. X., Lee, C. B. 2002 Theoet. Comput. Fluid Dynamics 15, 17Google Scholar
- Borodulin, V. I., Kachanov, Y. S. 1990 In Proc. Scientific & Methodological Seminar on Ship Hydrodynamic, Bulg. Hydrodynamics Center, Varna, 99–1–99–10Google Scholar
- Hama, F. R., Nautant, J. 1963 In Proc. of Heat Transfer & Fluid Mech. Inst. Stanford Univ. Press, Palo Alto, pp. 77–93Google Scholar
- Kachanov, Y. S., Ryzhov, O. S. 1992 Sib. Fiz. Tekh. Z. 1, 34Google Scholar
- Kovasznay, L. S., Komoda, H., Vasudeva, B. R 1962 In Proc. of Heat Transfer & Fluid Mech. Inst. Stanford Univ. Press, Palo Alto, pp.1–26Google Scholar
- Lee, C. B. 2000 Phys. Rev. E62, 3659Google Scholar
- Lee, C. B. 2001b Acta Physica Sinica, 50, 182Google Scholar
- Lee, C. B. 2001c In Proc. of Heat Transfer & Fluid Mech. Inst. California State University Press, Sacramento, pp.61–80Google Scholar
- Morkovin, M. V. In AFFDL Tech. Rep.68Google Scholar
- Morkovin, M. V. 1984 In Transition in Turbines, NASA Conf. Publ., pp.161Google Scholar
- Reynolds, O. 1883 Royal Society, Phil. Trans. 35, 84Google Scholar